Code P0446 ToyotaP0446 tends to be returned by diagnostic testing when the control circuit for the evap vent valve is not achieving the seal that enables the EVAP system in the vehicle to hold pressure. The P0446 codes triggered when an improper voltage signal is sent to Engine Control Module (ECM) through EVAP canister vent control valve. The P0440 code means that the control module has detected a leak in the Evaporative Emission (EVAP). The #1 reason the your car will give you this code is that the fuel tank cannot hold the correct pressure due to an old or loose gas cap. | What are Code P0446 2007 Toyota Prius Possible Symptoms? Engine Light ON (or Service Engine Soon Warning Light) Possible a noticeable fuel odor caused by the release of fuel vapors. P0446 = EVAP System, Vent Control Circuit. Toyota has issued a service bulletin #EG013-03 to address a problem with the evaporative emissions system and codes. Fuel vapors are stored in the charcoal canister. It signifies an issue in the vent control circuit in. That's just what auto zones computer said under the code. * P0446 - No rising in the fuel tank pressure when commanding the CCV open after an EVAP leak test | A high negative pressure (vacuum) does not occur in the system when commanding the EVAP VSV open with the CCV close * P0455 - When negative pressure introduction fuel tank pressure does not decrease in −3. 4th gen Sedan (E70), 1979–1987. John Gi Discussion Starter · Sep 12, 2020 (Edited) 2000 Camry LE, 4 cylinder 5S-FE engine (federal) with 182k miles just threw a check engine light, engine warmed up either when driving or at a stop light. Labor: 1. P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. Code P0446 1998 Toyota Camry Description. P0446 2001 Toyota Camry Code - EVAP System Vent Control Circuit | Need more Information on the P0446 2001 Toyota Camry Code? Need more information on how to fix the P0446 2001 Toyota Camry code?. Dodge hasn't listed the code for a while, and models like the Toyota Camry also haven't listed the code since the 2007 model year. See more Reply Save Like MetaGear89. I got the codes read at Oreillys. The ECM closes the EVAP system and creates negative. The cost of diagnosing the P0446 1998 Toyota Camry code is 1. The Evaporative System canister vent control valve is located on the EVAP canister and is used to seal the canister vent. P0446 2000 Toyota Camry Code - EVAP System Vent Control Circuit Search P0446 2000 Toyota Camry Questions and Answers → Need More Information on the P0446 2000 Toyota Camry. 1999 Toyota Corolla p0441 & p0446 codes. P0171; P0401; P0402; P0420; P0440; P0441; P0442; P0446; Common Trouble Codes. Fuel tank cap is cracked or damaged. Can't even really tell where the charcoal cannister is located. Only code shown is p0446. What is the Cost to Diagnose the Code C0246 Toyota? Labor: 1. P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It's a Stant brand, but there are no apparent problems visually. The P0446 codes triggered when an improper voltage signal is sent to Engine Control Module (ECM) through EVAP canister vent control valve. The code technically stands for: Evaporative Emission Control System Vent Control Circuit Malfunction. Code P0446, otherwise known as Evaporative Emission Control System (EVAP) Vent Control Circuit Malfunction, indicates that your car’s computer has detected (or believes it has detected) a problem with the function of the EVAP system vent valve. I just checked the gas cap, which is on snug and clicks. How to begin trouble-shooting I have a 1999 Corolla, 226,000, 1. Toyota Highlander P0446 Meaning P0446 is a universal OBDII trouble code. This generic OBD-II code indicates that the evaporative vent valve in the emission control system is malfunctioning. The code technically stands for: Evaporative Emission Control System Vent Control Circuit Malfunction. Over $100 at the dealer, about $50. Specifically, P0446 indicates an Evaporative Emission Control (EVAP) system vent control circuit malfunction. Evap code P0446 fixed. - In Mazda Tribute and Mazda 6, the stuck open purge valve (solenoid) could cause the code P0446 or other EVAP codes. Toyota Specific Codes. It's a Stant brand, but there are no. 1K 964K views 12 years ago http://www. P0446 doesn't say 'replace the charcoal canister'. My scanner found only these codes: P0440; P0441; and P0446. What Does the P0446 Toyota Code Mean? The Evaporative System ( EVAP) canister vent control valve is located on the EVAP canister and is used to seal the canister vent. $106 TOYOTA 25860-75230 Vapor Canister Purge Solenoid. 214K views 6 years ago Did you recently have the oil changed or check your air filter and suddenly experience a check engine light and stored codes P0440 and/or P0446? You may have a. Offers online Test Drive, Brochure Request, Buy now Request, Price List of Toyota car models. I believe Toyota does in fact sell your VSV separately from the charcoal canister, it's part number 90910-12130. This code means that the car’s computer detected trouble with the EVAP system vent valve’s function. Some mechanics use a smoke test to check for leaks. Gas cap replacement was the first code to show, so I replaced (and gas smell went away). When driven, owners may see the check engine light come on and the computer will store any of these trouble codes P0440, P0441, or P0446. Typically, this indicates a faulty vent valve, a bad control circuit for that valve, or a blockage in the vent valve. A P0446 error code indicates an evaporative emission control system (EVAP) vent control circuit malfunction. The cost to diagnose the C0246 Toyota code is 1. The code P0446 is set when the engine computer recognizes a fault or restriction at the vent control part of the Evaporative emission control system. Hatchback : Toyota Yaris GR Sport dan Agya GR Sport. P0446 Indicates that there is a fault in the evaporative emission control system. P0440, P0441 OR P0446 Toyota Fix P0440, P0441 OR P0446 codes Toyota. Multaz Rent Car menyewakan Toyota Hiace Commuter di Bandung dengan kapasitas 14 orang penumpang. It signifies an issue in the vent control circuit in your Toyota Corolla’s EVAP system, which prevents fuel vapor from being released into the atmosphere. Specifically, P0446 indicates an Evaporative Emission Control (EVAP) system vent control circuit malfunction. This is the full list of suspect items with DTC P0446. 2004 toyota tacoma, codes P0441,P0442,P0446. What Does the P0446 Toyota Code Mean? The Evaporative System ( EVAP) canister vent control valve is located on the EVAP canister and is used to seal the canister vent. P0440, P0441 OR P0446 Toyota Fix P0440, P0441 OR P0446 codes Toyota. 1998 toyota camry lf v6 158,000 miles following db2 trouble codes: p0171 system too lean p0440 evaporative emissions system p0441 evaporative emissions system incorrect purge flow p0446 evaporative em …. There is a factory service bulletin for the following Toyota models: 2003–2004 Toyota Corolla 2003–2005 Toyota Matrix. P0446 TOYOTA EVAP System Vent Control Circuit For More Fault codes visit our site : https://carsfault. Genuine Toyota Gas Cap (Sienna 2003-2006) Genuine Toyota Gas Cap (Sienna 2007-2014). This solenoid valve responds to signals from the Engine Control Module (). Typically, this indicates a faulty vent valve, a bad control circuit for that valve, or a blockage in the vent valve. Trouble code P0446 typically turns up in On-Board Diagnostic testing on account of an illuminated Check Engine Malfunction Indicator Lamp. Circut means that vent control valve is not working or open circuit (electric problem ) You have to find parts where is and test by DVOM. A few days later I went for second reading at totally different chain and got both p0441 and p0446. The #1 reason the your car will give you this code is that the fuel tank cannot hold the correct pressure due to an old or loose gas. P0440, P0441 OR P0446 Toyota Fix P0440, P0441 OR P0446 codes Toyota. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Toyota Highlander P0446 Meaning P0446 is a universal OBDII trouble code. com/ This video demonstrates how to test for a Toyota EVAP code p0446. 2004 Avalon XLS 165K, EVAP codes P0441 & P0446. In some GM cars, a bad fuel tank pressure sensor also could cause the code P0446. Now I Need Asked by sirjr · 12 ANSWERS 2002 TOYOTA COROLLA 1998 Toyota Corolla Po441 Evap Issues (1998 Toyota This Code Never Showed Before In 110,000ml. | What are Code P0446 2006 Toyota Prius Possible Symptoms? Engine Light ON (or Service Engine Soon Warning Light) Possible a noticeable fuel odor caused by the release of fuel vapors. A prevalent issue with the Toyota Highlander is the P0446 code. The cost to diagnose the P0446 2001 Toyota Camry code is 1. The evaporative emissions system in Toyota vehicles operates like most other EVAP test systems. com/_ylt=Awrhef7GfGBkcDkjOaBXNyoA;_ylu=Y29sbwNiZjEEcG9zAzMEdnRpZAMEc2VjA3Ny/RV=2/RE=1684073799/RO=10/RU=https%3a%2f%2fmechanicbase. What Does the P0446 Code Mean? Trouble code P0446 stands for an Evaporative Emission Control System (EVAP) Vent Control Circuit Malfunction. This solenoid valve responds to signals from the Engine Control Module ( ECM ). P0446 TOYOTA EVAP System Vent Control Circuit For More Fault codes. P0446 = EVAP System, Vent Control Circuit. Simply put, the computer has detected an issue regarding the functionality of your. Code P0446 1998 Toyota Camry Possible Causes Missing Fuel cap Incorrect fuel filler cap used Fuel filler cap remains open or fails to close Foreign matter caught in fuel filler cap Faulty Vapor Pressure Sensor Vapor Pressure Sensor harness is open or shorted Vapor Pressure Sensor circuit poor electrical connection. It says it's evaporative emission Ask an Expert Car Questions Toyota Repairs BigBob, Shop manager/Service 4,838 Satisfied Customers Shop Manager with 25 years experience BigBob is online now Related Toyota Questions P0441 p0446 p0445 2004 Toyota solara with the four-cylinder. Note: The fault code P0446 is one of the most common trouble codes with the GMC Sierra and Chevy Silverado. P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. The trouble code is P0446. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. P0446 TOYOTA EVAP System Vent Control CircuitFor More Fault codes visit our site :https://carsfault. This means that regardless of which make or model of vehicle, the code will mean the same thing (Matrix or not). It says replace the charcoal cannister. Toyota Po441, P0446 EVAP Vacuum Switching Valve VSV Testing and Canister Replacement GoTech 156K subscribers Subscribe 3. My scanner found only these codes: P0440; P0441; and P0446. MPV : Toyota Veloz GR Limited. Specifically, P0446 indicates an Evaporative Emission Control (EVAP) system vent control circuit malfunction. Loose fuel tank filler cap is the most common cause that triggers the P0440 code. The EVAP system comprises several critical components, including the gas cap, charcoal canister, purge valve, and vent valve. Only code shown is p0446. This solenoid valve responds to signals from the Engine Control Module ( ECM ). #2 according to them is evap canister or purge solenoid,vent solenoid I have also noticed a faint gas smell at times outside. Code P0446 means the car’s computer has detected a problem with the EVAP system vent valve. The gas tank was and is 3/4 full. I checked the cap and looks ok, but going to start there and replace it. Toyota Matrix P0446 Meaning P0446 is a universal OBDII trouble code. Code P0446 1998 Toyota Camry Possible Causes Missing Fuel cap Incorrect fuel filler cap used Fuel filler cap remains open or fails to close Foreign matter caught in fuel filler cap Faulty Vapor Pressure Sensor Vapor Pressure Sensor harness is open or shorted Vapor Pressure Sensor circuit poor electrical connection. | What are Code P0446 2006 Toyota Prius Possible Symptoms? Engine Light ON (or Service Engine Soon Warning Light) Possible a noticeable fuel odor caused by the release of fuel vapors. 2002 Toyota tacoma xtracab prerunner 2. A P0446 error code indicates an evaporative emission control system (EVAP) vent control circuit malfunction. P0446 Evaporative Emission Control System Vent Control Circuit Malfunction The code P0446 is set when the engine computer recognizes a fault or restriction at the vent control part of the Evaporative emission control system (EVAP). We've put together a list of common Toyota trouble codes below, and if the trouble code is linked, there's an article with some trouble code info and diagnostic advice available. I changed gas cap (Toyota), PCV valve (Toyota), Vapor Canister Purge Valve, Vacuum Switch Valve, EVAP Purge Valve. Click to expand Thanks for your quick response. What is the Cost to Diagnose the Code P0446 2001 Toyota Camry? Labor: 1. When your Toyota's P0441 is triggered, it usually indicates a bad vacuum switch or a leak in the EVAP system that is preventing fuel vapors from reaching the canister. The P0442 and P0446 codes are similar and all relate to the EVAP system. Toyota Rav4 P0446 Meaning P0446 is a universal OBDII trouble code. A very common trouble code with the Toyota Highlander is the P0446 code. Evap code P0446 fixed. The P0442 and P0446 codes are similar and all relate to the EVAP system. This means that regardless of which make or model of vehicle, the code will mean the same thing (Rav4 or not). Toyota Corolla. Some time loosen electric connector on V/C valve cause and do you have gas filling up problem? Good luck. Code P0446 may indicate that an electrical failure has been detected in either the bleed valve itself or its control circuit. Dont know what to do to fix this trouble code p0446 for a 1999 toyota corolla has 174257 miles and engine size is 1. Code P0446, otherwise known as Evaporative Emission Control System (EVAP) Vent Control Circuit Malfunction, indicates that your car’s computer has detected (or believes it has detected) a problem. P0446 definition: Evaporative Emission Control System Vent Control Circuit Malfunction Issue Severity: LOW– Continued driving for a short period of time is okay. The P0446 codes triggered when an improper voltage signal is sent to Engine Control Module (ECM) through EVAP canister vent control valve. com for repair manual info if you wish to dive deeper: Fuel tank cap is incorrectly installed. Open or short in vapor pressure sensor circuit. Hi, P0446="EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL CIRCUIT" (Open or close malfunction in CCV - 2 trip detection logic). 2004 toyota tacoma, codes P0441,P0442,P0446. My scanner found only these codes: P0440; P0441; and P0446. On your truck P0446 is most likely to be a failed vacuum switching valve on your charcoal canister. I'll check the charcoal canister and the hoses visually for nicks/cracks but I do not know how well that would be. The description of the failure varies from one car manufacturer to another, but one common thing is that the P0446 code does not directly indicate the defective part. P0446 definition: Evaporative Emission Control System Vent Control Circuit Malfunction Issue Severity: LOW– Continued driving for a short period of time is okay. I think it held pressure, because when I removed it, I heard a gurgling sound in the filler neck. P0446="EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL CIRCUIT" (Open or close malfunction in CCV - 2 trip detection logic). Typically, this indicates a faulty vent valve, a bad control. The bulletin pertains to some of the vehicles listed below but coverage also depends on the vehicle’s product date. If the P0446 code persists, check for a leak. When driven, owners may see the check engine light come on and the computer will store any of these trouble codes P0440, P0441, or P0446. - Acting as Project Engineer for high profile and deep water oil and gas project in Indonesia. P0446 Code Engine Mechanical Problem 4 Cyl Front Wheel Drive Automatic 114, 00 Miles You Have Helped Me Solve Problems With My Vehicles. The code P0446 is set when the engine computer recognizes a fault or restriction at the vent control part of the Evaporative emission control system cruiserguy, Jan 26, 2020 #9. This solenoid valve responds to. Official Web Site of Galaxy Toyota, Lajpat Nagar-South Delhi, Selling Toyota Cars. See full list on mechanicbase. It gets to 65mph effortlessly and when pushed is able to do 80mph easily. Evaporative emission control system: incorrect purge, leak detected, vent Ask an Expert Car Questions Toyota Repairs Skyvisions, ASE Certified Technician 15,501 Satisfied Customers Toyota Master Diagnostic Skyvisions is online now Continue Related Toyota Questions. The P0442 and P0446 codes are similar and all relate to the EVAP system. On your truck P0446 is most likely to be a failed vacuum switching valve on your charcoal canister. The computer is responsible for monitoring and controlling the purge valve. Possible causes - - - Incorrect fuel filler cap used - Fuel filler cap remains open or fails to close - Foreign matter caught in fuel filler cap - Vent control valve harness is open or shorted. This means that regardless of which make or model of vehicle, the code will mean the same thing (Rav4 or not). Official Web Site of Galaxy Toyota, Moti Nagar Crossing, Selling Toyota Cars. This code means that the car's computer detected trouble with the EVAP system vent valve's function. Check engine light came on recently indicating p0441 & through a second OBD reading (I was curious) at a different store indicated p0441 AND p0446. In some GM cars, a bad fuel tank pressure sensor also could cause the code P0446. The P0446 code is triggered when an improper voltage signal is sent to Engine Control Module through the EVAP canister vent control valve. Agreed, I want this issue corrected (safety first) and deal with the codes. I read a bunch of threads everywhere about it. Anyone got any experience with this? Looked up some online videos but it appears my 2004 tacoma looks different under the hood then 2002s in the video. 2003–2005 Toyota Matrix. P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. Key on, engine off vapor pressure =. P0446: Evaporative Emission Control System Vent Control Circuit. 1999 Toyota Corolla p0441 & p0446 codes. In all cases, it clearly shows the mechanic that a check of the EVAP vent valve is in order. The description of the failure varies from one car manufacturer to another, but one. Dodge hasn’t listed the code for a while, and models like the Toyota Camry also haven’t listed the code since the 2007 model year. Anything else besides the canister?. 214K views 6 years ago Did you recently have the oil changed or check your air filter and suddenly experience a check engine light and stored codes P0440 and/or P0446? You may. Toyota Po441, P0446 EVAP Vacuum Switching Valve VSV Testing and Canister Replacement GoTech 156K subscribers Subscribe 3. Code P0446 1998 Toyota Camry Possible Causes Missing Fuel cap Incorrect fuel filler cap used Fuel filler cap remains open or fails to close Foreign matter caught in fuel filler cap Faulty Vapor Pressure Sensor Vapor Pressure Sensor harness is open or shorted Vapor Pressure Sensor circuit poor electrical connection. The part number for your charcoal canister is 77740-34080. com for repair manual info if you wish to dive deeper: Fuel tank cap is incorrectly installed Fuel tank cap is cracked or damaged Vacuum hose is cracked, blocked, damaged or disconnected Open or short in vapor pressure sensor circuit Vapor pressure sensor. Code P0446 Toyota Description The Evaporative System ( EVAP ) canister vent control valve is located on the EVAP canister and is used to seal the canister vent. On the other hand, the Toyota Camry hasn’t listed the code P0446 since the 2007 model. - The TSB for 1999 Toyota Corolla suggests replacing the ECM with an updated part as a repair for the diagnostic trouble code P0446. The letter P indicates a generic powertrain code, while the number 0446 points more specifically toward a malfunctioning vent control circuit […]. For that reason, the P0446 code will sometimes be a sign that an electrical failure has been detected with either the control circuit or the vent valve, which may result in any number of codes. Some sugge said VSV valves which the most expensive one costs 190. The car is running fine under the load. co 👈=====Engine Code P0441 Saving Repair Parts. Trouble code P0446 typically turns up in On-Board Diagnostic testing on account of an illuminated Check Engine Malfunction Indicator Lamp. There is a factory service bulletin for the following Toyota models: 2003–2004 Toyota Corolla. When this occurs, the EVAP system may not be capable of pressurizing and maintaining a. The evap vent valve in most makes and models depends on a supply of a 12V battery voltage with key on. Irritating because many of these codes are misleading. P0446="EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL CIRCUIT" (Open or close malfunction in CCV - 2 trip detection logic). This is the full list of suspect items with DTC P0446. It signifies an issue in the vent control circuit in your Toyota Corolla’s EVAP system, which. P0446 Evaporative Emission Control System Vent Control Circuit Malfunction The code P0446 is set when the engine computer recognizes a fault or restriction at the vent control part of the Evaporative emission control system (EVAP). The evaporative emissions system in Toyota vehicles operates like most other EVAP test systems. =====Claim your FREE engine code eraser 👉 https://free. A plunger will then move to seal the canister vent. P0446 tends to be returned by diagnostic testing when the control circuit for the evap vent valve is not achieving the seal that enables the EVAP system in the vehicle to hold pressure. This trouble code references a number that is given to you when you plug your Highlander into a OBDII scanner. The P0446 code is triggered when an improper voltage signal is sent to Engine Control Module through the EVAP canister vent control valve. P0440, P0441 OR P0446 Toyota Fix P0440, P0441 OR P0446 codes Toyota. The problem is due to an inoperative Canister Closed Valve Vacuum Switching Valve (CCV VSV). I changed gas cap (Toyota), PCV valve (Toyota), Vapor Canister Purge Valve, Vacuum Switch Valve, EVAP Purge Valve. What is P0446? The fault code P0446 means your vehicle’s evaporative emission control system or the vent valve in the EVAP system is malfunctioning. Code P0446 means the car's computer has detected a problem with the EVAP system vent valve. A faulty vent control valve most commonly causes P0446. The P0446 code is triggered when an improper voltage signal is sent to Engine Control Module through the EVAP canister vent control valve. P0446 is a gross leak in the evap. Then the next code was p0441 (read at one auto disc. com-~-~~-~~~-~~-~-Please watch: "Sa. new letter combination plate for brand or model of vehicle. The P0441 code can also indicate a faulty or. #2 according to them is evap canister or purge solenoid,vent solenoid. I replaced then, erased the codes and after 3 miles the. The bulletin pertains to some of the vehicles listed below but coverage also depends on the vehicle's product date. Code P0446 Toyota Description The Evaporative System ( EVAP ) canister vent control valve is located on the EVAP canister and is used to seal the canister vent. Toyota Rav4 P0446 Meaning P0446 is a universal OBDII trouble code. The evap vent valve in most makes and. Code P0446 may indicate that an electrical failure has been detected in either the bleed valve itself or its control circuit. Dengan tawaran harga terbaik serta pelayanan. The bulletin states that under some conditions, you may encounter a Solara or Camry P0440, P0441, P0446 trouble code. Toyota Rav4 P0446 Meaning P0446 is a universal OBDII trouble code. New Delhi, 9th February 2019 - Reiterating its strong commitment towards Road Safety, Toyota Kirloskar Motor, today organized a national platform on road safety for the state level winners with an aim to evaluate the real-time learnings and applications by the students. P0446: Evaporative Emission Control System Vent Control Circuit. It's the silver and blue thing. It says this: P0446 Evaporative Emission Control System Vent Control Circuit Malfunction. Code P0446 Toyota Description The Evaporative System ( EVAP) canister vent control valve is located on the EVAP canister and is used to seal the canister vent. It often appears with other codes, such as P0420, P0441, or P0440. The Check engine light came on this morning on the way to work. The cost of diagnosing the P0446 2006 Toyota Prius code is 1. Hooked my scan tool and it read P0440 and P0446. The Check engine light came on this morning on the way to work. Repair Urgency: Get this code fixed withing the next month to prevent issues related to the emissions system including failed inspections. The code technically stands for: Evaporative Emission Control System Vent Control Circuit Malfunction. How to also test an early vacuum switching valve and replace the canister. com%2ftrouble-code%2fp0446%2f/RK=2/RS=H8Dw5ehnsEDrMuq. Galaxy Toyota have a team of experienced, well equipped & company trained staff across all functions to ensure a delightful customer experience. This code corresponds to a specific number obtained when connecting your Highlander to an OBDII scanner. The CCV assembly process has been changed to correct this condition. 214K views 6 years ago Did you recently have the oil changed or check your air filter and suddenly experience a check engine light and stored codes P0440 and/or P0446? You may have a. Trouble code P0446 stands for an Evaporative Emission Control System (EVAP) Vent Control Circuit Malfunction. Most auto repair shops charge between $75 and $150 per hour. A P0446 error code indicates an evaporative emission control system (EVAP) vent control circuit malfunction. It signifies an issue in the vent control circuit in your Toyota Prius’s EVAP system, which prevents fuel. The bulletin states that under some conditions, you may encounter a Solara or Camry P0440, P0441, P0446 trouble code. Toyota Po441, P0446 EVAP Vacuum Switching Valve VSV Testing and Canister Replacement GoTech 156K subscribers Subscribe 3. Table of Contents Definition Symptoms Causes Diagnosis How to Fix P0446 Definition P0446 is a standard. This means that regardless of which make or model of vehicle, the code will mean the same thing (Highlander or not). What Does the Code P0446 Mean? When a diagnostic scan of an automotive computer outputs the trouble code P0446, it is important to understand the meaning of the letter and numbers in this alphanumeric string. Toyota has issued a service bulletin #EG013-03 to address a problem with the evaporative emissions system and codes P0440, P0441 OR P0446. When the ECM sends an ON signal, the coil in the solenoid valve is energized. What is P0446? The fault code P0446 means your vehicle’s evaporative emission control system or the vent valve in the EVAP system is malfunctioning. P0446 tends to be returned by diagnostic testing when the control circuit for the evap vent valve is not achieving the seal that enables the EVAP system in the vehicle to hold pressure. Vacuum hose is cracked, blocked, damaged or disconnected. 'Toyota Safety Education Program' (TSEP) is an interactive learning program targeted at school children between the age. Toyota 25860-75230 Vapor Canister Purge Solenoid. It signifies an issue in the vent control circuit in your Toyota Prius’s EVAP system, which prevents fuel vapor from being released into the atmosphere. So 3 weeks ago my Taco CEL went off.