P0455 chevy traverse - A code p0455 most likely means one or more of the following has happened: A loose or improperly affixed gas cap; A non-conforming gas cap (i.e. not factory/original brand) Other leak or damaged piece in EVAP system; Possible Solutions. With a p0455, the most common repair is to:

 
The codes P0496 and P0455 and P050D are usually set due to a failing Evaporative Emissions Canister Purge Solenoid/Valve. I would address the engine misfire code and the purge valve and that should solve these codes for you. ... This is on a 2011 Chevy Traverse my ABS and traction control light are on and my message center …. Seat view lincoln financial field

However, some Chevrolet vehicles do use this code. P069E code indicates that the FPCM has identified an issue in the fuel system and is requesting the PCM turn on the check engine light. The FPCM supplies and regulates the voltage that goes to the fuel pump and the fuel pump relay.2009 Traverse P0420 Code. Check engine light came on today. Put a code scanner on it, P0420 catalyst system efficiency low (bank1), no other codes. The vehicle has 89K miles on it. Usually when this thing throws a code I come on here and there are a ton of posts on the specific problem and the fix.See also P0455 Code: Evaporative Emission Control System Large Leak Detected. For an in-depth look at what the EVAP system does for your car, ... For instance, the documented fixes for a 2010 Chevrolet Silverado 1500 include replacing the FTP sensor, fuel tank vent hose, and the fuel pump or sending unit assembly. Repairing the …Service engine light on a 2016 Chevy Traverse resulted in a P0442 and P0496 error codes. Fuel cap seal checked out ok but we reset the codes and made sure t...#1 · Mar 10, 2016 2011 Traverse, 3.6L, 80k. Between yesterday and today my wife reports 2 or 3 gas cap warnings , and then a check engine light. Cap was tight. I put the scan tool on (Innova 3160) on and there are 3 P0455 codes there. Evap gross leak. I can't get a new cap tonight, so I cleaned her cap and cleared the codes.The Chevy P0455 is a diagnostic trouble code that indicates a leak in the evaporative emission control system. This can be caused by a number of things, such as a loose gas cap, faulty purge valve, or leaky charcoal canister. Symptoms of this code may include the check engine light being illuminated, and the vehicle failing an emissions test.Come along with Eric O. and have a look at this 2008 Pontiac Torrent 3.4 with a "P0455 Large / Gross EVAP Leak." Now this a very common problem and is often misdiagnosed as a gas cap or a...FIX CODE P0443 P0444 PURGE CONTROL VALVE CHEVY, CHEVROLET, BUICK, GMC, CADILLAC Car Scanner: https://amzn.to/2G5lxTi Check out our Amazon Store for the too...P2099 is a diagnostic trouble code (DTC) for "Post Catalyst Fuel Trim System Too Rich Bank 2". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for ...Dec 18, 2020. buck91. The Traverse has started randomly throwing P0455 codes, usually after showing a tighten fuel cap message. Replaced the suspect aftermarket fuel cap with OEM, and it stayed quiet for a week. Now it's back.he changed the Purge valve in the engine bay. But problem persisted, the then had to replae the EVAP solenoid. THis one- sits on top of the fuel tank.... so the tank does have to be dropped to replace. 2023 Traverse LT 3.6L 7,500. 2013 Equinox 3.6L 121,000. 2003 Trailblazer 4.2L 188,000. 2010 Traverse 3.6L 193,000.The code P0455 is set when the engine computer recognizes a large leak in the Evaporative emission control system (EVAP). The vehicle's EVAP system is sealed, it's main purpose is to prevent gasoline vapors in the fuel tank from escaping into the atmosphere. The most common culprit is the gas cap that is left open or not closed properly ...P0497 is a diagnostic trouble code (DTC) for "Evaporative Control System Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154.99 .P0497 is a diagnostic trouble code (DTC) for "Evaporative Control System Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154.99 .R. rbarrios · #3 · Mar 21, 2018 (Edited) Yup, P0300. is random misfires overall-- but not showing WHICH cylinder. If it did have a specific cylinder it would be P0301, 302,303----306. the last digit being cylinder 1-6. you can scan to see the # of misfires PER cylinder. But-- with the P0324-- this means theres somekind of issue with the knock ...Brake failure on a 2 day old chevy traverse sequence of events . . . 1. i ... P0455 Set. Click to view a copy of the full alert on NHTSA's website (select ...Apr 3, 2018 · 2013-2014 Chevrolet Traverse part # 22933347 - Accessory Wiring Junction Block. www.gmpartsdirect.com 2011 2LT FWD replaced by 2017 2LT AWD. Reply. Save. roosavonta. Check Engine Light On with a P0455 Large Evap Leak Detected. Diagnosing Evap leaks does NOT have to be complicated and sometimes you don't even need a smoke ...P0455 – Evaporative Emission Control System (EVAP) Large Leak Detected. What Does the P0455 Code Mean? The P0455 trouble code is a generic powertrain code, but not all manufacturers use it. This DTC indicates that there’s a significant leak in the EVAP system. It’s been reported with many brands, such as …Some V engines will have 2 knock sensors in the valley under the intake, and on those engines, the knock sensors are in “wells” covered with a rubber grommet. If a grommet leaks, water will flood the sensor and ruin it. This happens a lot on the 4.8/5.3/6.0L Chevy V8s.For DTC P0455 (large leak detected), the vehicle will set the code due to large leak or purge blockage. A large leak can occur from an unseated tube connection, damaged tube, a …Autozone does not have the equipment nor the knowledge to tell you what part is bad on your vehicle.Their job is to sell you parts that most of the time you don't need it or them,but they did their job,they sold you a part!Potential causes of a P0496 EVAP code include: Faulty purge or vent solenod/valve. Plugged EVAP canister. Failed EVAP / fuel pressure sensor. Poor electrical connection. Short electrical circuit condition. (Hyundai, Isuzu) Faulty …The P0496 code indicates that there’s an incorrect amount of intake vacuum flow occurring in the car’s EVAP system. Any time this vacuum is higher than what the computer determines is appropriate, the codes will be set. While this code can occur with all brands, it appears to be most common with GM vehicles.The P0011 DTC stands for “A” Camshaft Position Timing Over Advanced or System Performance Bank 1. The code is set once your ride’s ECM/PCM is not able to detect the difference in the desired camshaft position …Apr 20, 2020 · In this video I have a look at a 2017 Chevrolet Traverse that came in with a code P0496 (evaporative emission system high purge flow) This is a pretty straig... Come along with Eric O. and have a look at this 2008 Pontiac Torrent 3.4 with a "P0455 Large / Gross EVAP Leak." Now this a very common problem and is often ...Dec 18, 2020. buck91. The Traverse has started randomly throwing P0455 codes, usually after showing a tighten fuel cap message. Replaced the suspect aftermarket fuel cap with OEM, and it stayed quiet for a week. Now it's back.P0443 definition: Evaporative Emission Control System Purge Control Valve Circuit Malfunction. Issue Severity: LOW – Continued driving for a short period of time is okay. Repair Urgency: Get this fixed within the next month. Diagnosis: This trouble code severely impacts the drivability of your vehicle. The most common problems consist of ...Dec 23, 2022 · Faulty fuel injector. Vacuum leak. Low fuel pressure. Camshaft and/or crankshaft sensor defective. Engine timing off. Leaking head gasket. Low engine compression. Poor quality fuel that is old or contaminated. P0301 is not one of the top 5 trouble codes for the Chevrolet Traverse but, it is still a common one. P0300 definition: Random, Multiple Misfire Detected. Code Severity: SEVERE – Stop driving immediately. Repair Urgency: Fix this trouble code immediately (same-day if possible) to avoid ignition failure, catalytic converter damage, and dangerous conditions. Diagnosis: A multiple cylinder misfire can be caused by anything from faulty spark ...To diagnose the P0454 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.Chevrolet P0420 definition : Catalyst system efficiency below threshold (Bank 1) Issue Severity: MODERATE – Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible to avoid further damage to your emission system and possible engine damage. Diagnosis: The most …If the code still exists, remove it, inspect it for cracks or damage, and clean it thoroughly. The most common reason for the P1457 code is a damaged or worn-out cap. The caps are cheap and easy to replace. If the gas cap replacement does not clear the code, inspect the EVAP’s canister side vacuum lines.In modern cars, the purge valve is an electrically-operated solenoid, that is controlled by the engine computer. When the engine is off, the purge valve is closed. When the engine is running and fully warmed up, the engine computer pulses the purge valve open allowing some amount of fuel vapors to be purged from the charcoal canister and …This Chevrolet Express Van won't pass emissions, no check engine light, and monitors are not complete. Using different testing methods we find the cause of t...#OBDCodeP1682 #ignition1SwitchCircuit2P1682 Ignition 1 switch circuit 2 [SOLVED]This is very informative video on obd code P1682 on GM cars and trucks ...P0455, P0446, P0449, P0498 Set Attention: Proceed with this EI ONLY if the customer has commented about this concern AND the PIE number is listed in the Global Warranty …10199281. TSB Date: May 25, 2021. Date Added to File: July 19, 2021. Failing Component: Fuel System, Gasoline:Storage:Evaporative Emissions:Canister. Summary: This service bulletin provides diagnostic tips/steps on testing for possible evap leaks in the system to correct a customer concern of an MIL illuminated with DTCs P0442 and/or P0455 set.Sep 29, 2018 · P0135 Chevy Traverse. P0135 is a very common OBDII code that occurs in the Chevy Traverse. It is caused by a failure in one of the oxygen sensors heated elements, specifically bank 1 sensor 1. It technically stands for: P0135: Heated Oxygen Sensor → Sensor Heater Circuit Malfunction → Bank 1, Sensor 1. The purpose of the heated element in ... Code P0455 Chevrolet Tech Notes. The P0455 code means that the control module has detected a small leak in the Evaporative Emission (EVAP). A loose fuel tank filler cap is the most common cause that will trigger the P0455 code. There is a factory service bulletin for all the models from 2000 through 2021. The factory states that there are seven ...An illuminated check engine light is a common symptom of trouble code P000A. How to Diagnose the P000A Code. To restore the optimal performance of your engine, the code P000A must be resolved immediately.The 2014 Chevy Equinox is a reliable and dependable SUV that has been a favorite among drivers for years. But how long can you expect it to last? Here, we’ll explore the expected lifespan of a 2014 Chevy Equinox and provide tips on how to e...P0497 is a diagnostic trouble code (DTC) for "Evaporative Control System Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154.99 .=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0452 Saving Repair Parts...P0443 definition: Evaporative Emission Control System Purge Control Valve Circuit Malfunction. Issue Severity: LOW – Continued driving for a short period of time is okay. Repair Urgency: Get this fixed within the next month. Diagnosis: This trouble code severely impacts the drivability of your vehicle. The most common problems consist of ...Dec 31, 2018 · Code po455 on a 2015 Traverse. Get a dash message; Tighten gas cap" Sets code. Replaced cap. Still does it. No set pattern to this problem; IE: can drive 500 miles then it'll set the code, or, drive 15 miles and it'll set the code. And also, it will be over several days, maybe a week or 2 before it sets. Autozone does not have the equipment nor the knowledge to tell you what part is bad on your vehicle.Their job is to sell you parts that most of the time you don't need it or them,but they did their job,they sold you a part!May 11, 2023 · The P0496 code indicates that there’s an incorrect amount of intake vacuum flow occurring in the car’s EVAP system. Any time this vacuum is higher than what the computer determines is appropriate, the codes will be set. While this code can occur with all brands, it appears to be most common with GM vehicles. Traverse 2016 2017 Trax 2016 2017 GMC Acadia 2016 2017 To: All General Motors Dealers ... P0455, P0171, or P0174. Following the diagnostics for the indicated DTC(s) in SI may lead to purge solenoid valve replacement. • If the diagnostics do not lead to purge solenoid valve replacement, no further action is required. Claim diagnosis ...Traverse 2016 2017 Trax 2016 2017 GMC Acadia 2016 2017 To: All General Motors Dealers ... P0455, P0171, or P0174. Following the diagnostics for the indicated DTC(s) in SI may lead to purge solenoid valve replacement. • If the diagnostics do not lead to purge solenoid valve replacement, no further action is required. Claim diagnosis ...FIX CODE P0036 P0054 P0137 P0138 P0141 ENGINE LIGHT CHEVY, CHEVROLET, GMC, BUICK, CADILLAC Car Scanner: https://amzn.to/2G5lxTi Oxygen Sensor Socket: https...P0455 in the Chevy Traverse is a trouble code that indicates your truck has a LARGE evaporative emissions leak. With this code, you shouldn’t notice any symptoms besides perhaps a noticeable fuel smell. P0455 usually is not an immediate threat to the driveability of your Traverse.This is the quick and easy way to clear the P0449 and p0455 codes on a Chevy Silverado. Process is similar for all Silverados. Link to AC Delco Solenoid kit...May 11, 2021 · #headsavagegarage #mrhands #HSG This a simple fix but, you must take your time on this. The reason is the connector on the sensor is fragile. It brakes very ... 2018+ Chevy Traverse General Discussion. Up Shift Down Shift switch Code P0826. Jump to Latest Follow 7K views 1 reply 2 participants last post by Jetina Apr 21, 2020. B. bryanscc Discussion starter 2 posts · Joined 2019 Add to quote; Share Only show this user #1 · Nov 2, 2019 ...Engine Code P0455: Evaporative Emission Control System Leak (Gross). EVAP System has a gross leak. Engine Code P0455 means the Evaporative Emissions …Come along with Eric O. and have a look at this 2008 Pontiac Torrent 3.4 with a "P0455 Large / Gross EVAP Leak." Now this a very common problem and is often misdiagnosed as a gas cap or a...Save. M. mcgowen980 · #4 · Sep 4, 2019. P0430 after removing the intake manifold could be an indication of an air leak at the manifold. Faulty gasket or a cracked manifold could be the culprit. Coolant entering the cylinder can also cause this and the coolant leak could be caused by the same issue (s) stated above.For DTC P0455 (large leak detected), the vehicle will set the code due to large leak or purge blockage. A large leak can occur from an unseated tube connection, damaged tube, a stuck opened canister vent valve or stuck closed purge valve. For DTC P0442 (small leak detected), the vehicle will set this code due to small leak. The leak can occur fromThis is the quick and easy way to clear the P0449 and p0455 codes on a Chevy Silverado. Process is similar for all Silverados. Link to AC Delco Solenoid kit...fault codes P1682 & P0689 - resolved. Hello. i have a chevrolet malibu 2010 3.5 V6 ( LZE engine ) and started to get very confusing problem. minute of driving when i get stopped for parking i received ENG POWER REDUCED and all following message like ESC & Traction message. and engine start to work like on 3 cylinder …Mar 3, 2020 · FIX CODE P0443 P0444 PURGE CONTROL VALVE CHEVY, CHEVROLET, BUICK, GMC, CADILLAC Car Scanner: https://amzn.to/2G5lxTi Check out our Amazon Store for the too... the truck couldn't pass emission due to a code p0455, customer replaced gas cap but it came back on,, vent solenoid or a broken line could be the problem. it...0:00 / 2:20 How to Fix P0455 Engine Code in 3 Minutes [2 DIY Methods / Only $4.61] nonda 76.2K subscribers 645K views 2 years ago UNITED STATES ============================= Claim your FREE...A 6.1 magnitude earthquake rocked western Colombia Saturday afternoon according to Earthquake Track and the U.S. Geological Survey. The report indicated that the large earthquake shook an area ...May 6, 2020 · Traverse 2017, chevy Uplander 2009 LT short wheelbase, Impala 2003, jeep cherokee Laredo 1990, chevy citation 1984 2.8 v6, vauxhall Firenza1972, rambler american 1964 model 330, vauxhall velox 1956 rebuilt, NSU Prinz 1961 2 cylinder micro car rebuilt, Renault Dauphine 1960 rebuilt, ford prefect 1952 ( english car with non hydrolic brakes rebuilt. In this video, we are describing the process of diagnostic DTC P0496 in Chevrolet Traverse 2018 verifying scan tool data and purge and seal procedure.Music: ...Check Engine Light On with a P0455 Large Evap Leak Detected. Diagnosing Evap leaks does NOT have to be complicated and sometimes you don't even need a smoke ...Check the easiest solution first by tightening or replacing your fuel cap. After you’ve cleared your error code, code P0455 will return if this wasn’t the source of the air leak. Next, replacing a section of hose is the next most …how I discovered the issue that set these fault codesThe P0455 code means that the control module has detected a small leak in the Evaporative Emission (EVAP). A loose fuel tank filler cap is the most common cause that will …Diagnosing vehicle problems can be tricky because similar symptoms can point to issues in different systems. The best way to identify which components need to fixed or replaced is by retrieving the logged on-board diagnostic (OBD) code/s from your vehicle using a scan tool.Chevrolet P0420 definition : Catalyst system efficiency below threshold (Bank 1) Issue Severity: MODERATE – Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible to avoid further damage to your emission system and possible engine damage. Diagnosis: The most …#P0455 #maxicommk808bt #ventSolenoidThe Chevy P0455 is a diagnostic trouble code that indicates a leak in the evaporative emission control system. This can be caused by a number of things, such as a loose gas cap, faulty purge valve, or leaky charcoal canister. Symptoms of this code may include the check engine light being illuminated, and the vehicle failing an emissions test. When there is a large leak in the Chevy Trailblazer’s EVAP system, it will throw the P0455 OBDII Code. P0455 indicates a large leak in the evaporative emission control system. (EVAP). There are different leak size codes. For example, P0456 means your Trailblazer has a small EVAP leak. While the trouble code may state that there is a “large ...Mar 19, 2018 · 18186 - Customer Satisfaction Program. Certain 2018 model year Buick Enclave, Chevrolet Impala and Chevrolet Traverse vehicles, equipped with a 3. Read More » TSB #PIP5373B Date Announced: JUN 11 ... This Chevrolet Express Van won't pass emissions, no check engine light, and monitors are not complete. Using different testing methods we find the cause of t...The P0455 OBD-II code means the engine computer has detected an Evaporative Emissions Control System (EVAP) Malfunction or, to be precise, a ‘Gross Leak Detected’. Basically, this means there is a large leak in the EVAP system. The EVAP system captures the fuel vapors evaporating from the storage system and releases them back into the ...According to research performed by GM Authority , GM currently offers capless fuel fill on 26 vehicles, including the new Blazer, third-generation Equinox, Corvette, Camaro, Silverado, and Sierra ...how I discovered the issue that set these fault codesWATCH PART 2 REPLACING THE HIGH PRESSURE FUEL PUMP! Next video on the channel!In this video we cover GM Vehicle’s Fault Code troubleshooting for P0172 and P0...The P0496 code indicates that there’s an incorrect amount of intake vacuum flow occurring in the car’s EVAP system. Any time this vacuum is higher than what the computer determines is appropriate, the codes will be set. While this code can occur with all brands, it appears to be most common with GM vehicles.2009 Traverse P0420 Code. Check engine light came on today. Put a code scanner on it, P0420 catalyst system efficiency low (bank1), no other codes. The vehicle has 89K miles on it. Usually when this thing throws a code I come on here and there are a ton of posts on the specific problem and the fix.To diagnose the P0826 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.However, some Chevrolet vehicles do use this code. P069E code indicates that the FPCM has identified an issue in the fuel system and is requesting the PCM turn on the check engine light. The FPCM supplies and regulates the voltage that goes to the fuel pump and the fuel pump relay.Labor: 1.0. The cost to diagnose the C0242 Chevrolet code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

The P0455 diagnostic trouble code appears when there’s a leak in the Evaporative Emission Control (EVAP) system, and the system can’t maintain pressure. The EVAP system …. Houses for rent watertown ny craigslist

p0455 chevy traverse

The P0449 code is, in most cases, caused by a faulty EVAP vent valve or the wirings to it. However, depending on the car model, it could also be caused by other issues related to the EVAP system. The causes of the P0449 trouble code range from simple to more complex. For this reason, it’s important to follow the diagnostic steps we provide ...Feb 21, 2018 · Dec 18, 2020. buck91. The Traverse has started randomly throwing P0455 codes, usually after showing a tighten fuel cap message. Replaced the suspect aftermarket fuel cap with OEM, and it stayed quiet for a week. Now it's back. If the code still exists, remove it, inspect it for cracks or damage, and clean it thoroughly. The most common reason for the P1457 code is a damaged or worn-out cap. The caps are cheap and easy to replace. If the gas cap replacement does not clear the code, inspect the EVAP’s canister side vacuum lines.Chevrolet Traverse 2019 2019 LFY ENGINE-GAS, 6 CYL, V6, 3.6L, SIDI, DOHC, ATSS, GEN 1+ Chevrolet Trax 2020 2020 LUV ENGINE-GAS, 4 CYL, 1.4L, MFI, ... P0455, P0171, or P0174. Following the diagnostics for the indicated DTC(s) in SI may lead to purge solenoid valve replacement. • If the diagnostics do not lead to purge solenoid valve ...In May of 18 bought a 15 Traverse LS. Brought it home, filled it up, drove around 300 miles till the gauge showed about 1/4, filled it up again, set code p0455. Changed gas caps, drove several hundred miles, set code p0455. Changed gas caps again and drove couple hundred miles, set code p0455.Feb 21, 2018 · Dec 18, 2020. buck91. The Traverse has started randomly throwing P0455 codes, usually after showing a tighten fuel cap message. Replaced the suspect aftermarket fuel cap with OEM, and it stayed quiet for a week. Now it's back. Common trouble codes related to the EVAP system include P0440, PO441 code, P0442, P0446, and P0455. If your vehicle has any of these codes, it is essential to address the issue as soon as possible. EVAP System Leak Repair Cost, Symptoms #13. Presence of Fuel in Charcoal Canister. The charcoal canister is a crucial component of …Fuel pressure moves gasoline or diesel out of the tank, through the fuel rail, and to the engine’s injectors.The fuel rail pressure sensor gauges the pressure in the rail and sends voltage signals to the engine control module (ECM) or powertrain control module (PCM). The signals indicate the rail’s fuel pressure.Sep 11, 2019 · 1. A vehicle may come in with DTCs including any of the following; P0496, P0442, P0455, P0171, or P0174. Following the diagnostics for the indicated DTC(s) in SI may lead to purge solenoid valve replacement. • If the diagnostics do not lead to purge solenoid valve replacement, no further action is required. Claim diagnosis Aug 26, 2022 · Overview of the causes and fixes for a P0496 Code Evaporative Emission System High Purge Flow on a Chevy Traverse.Read Here for more information: https://www... According to research performed by GM Authority , GM currently offers capless fuel fill on 26 vehicles, including the new Blazer, third-generation Equinox, Corvette, Camaro, Silverado, and Sierra ...In May of 18 bought a 15 Traverse LS. Brought it home, filled it up, drove around 300 miles till the gauge showed about 1/4, filled it up again, set code p0455. Changed gas caps, drove several hundred miles, set code p0455. Changed gas caps again and drove couple hundred miles, set code p0455.Mar 1, 2022 · STEP 1: USE FIXD TO ENSURE NO OTHER ENGINE CODES ARE PRESENT. Use FIXD to scan your vehicle to verify P0455 is the only code present. If other codes are present, they must be addressed first. If it is paired with P0441, P0440 and/or P0456, there is most likely a solenoid failure or a more complex EVAP leak. .

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