VW N80 Purge Valve for Optimal Engine Performance – P0441 P0444
The primary function of the purge valve (N80) is to capture fuel vapor from the fuel tank and return it to the fuel system so that it can be burned in the engine instead of released into the air. The purge valve is short-term for the canister purge valve but may also be called the evap purge valve. The purge valve on Volkswagen vehicles is part of the Evaporative Emission Control (EVAP) system and can fail. To resolve this issue, VW even published a technical service bulletin known as EVAP Canister Purge Valve N80. This guide provides a step-by-step procedure to diagnose a Volkswagen Jetta equipped with a bad purge valve. We will look at the Diagnostic Trouble Code set by a defective evaporative purge valve on a VW, its symptoms, and where the purge valve is located.
In most cases, the only symptom that the driver will notice is the check engine light stays on. Fuel consumption may also increase, but other symptoms, such as rough idle and engine-struggling start, are much less likely.
The evap purge valve is a “normally closed” or always closed valve. This opens when commanded by the Engine Control Unit (ECU) to purge the excess fuel vapors from the charcoal canister into the intake manifold. The purge valve also tests for vapor leaks by pulling a vacuum. When it fails, it causes fault codes such as P0441 or P0444 or other codes related to “evap system malfunction,” pointing to a faulty N80 sensor.
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VW N80 Purge Valve Location
On Volkswagen Jetta, Golf, CC, Passat, EOS, CC, etc., the purge valve is mounted on top of the engine’s generator, generally on the passenger side. the image features the evap purge valve on a 2016 Volkswagen Jetta fitted with a 1.4 turbo engine.
The purge valve on this Volkswagen, equipped with a 2.5L engine, is on top of the engine on the passenger side.
Symptoms
Here are a few symptoms you may notice when the Volkswagen purge valve is bad:
- The check engine light on
- Increased fuel consumption
- Rough idle
- The engine struggles to start.
- A decrease in engine performance
Possible Causes
- Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) faulty/jammed
- Evaporative Emission (EVAP) Canister Purge Solenoid Valve (N115) faulty/jammed
- Evaporative Emission (EVAP) Canister Sealing faulty
- Pipes between the Tank Breathing and Throttle Body are leaky/blocked.
Buy Replacement VW N80 Valve
Replacement
Troubleshooting
- Check Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)
- Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve (N115)
- Check Evaporative Emission (EVAP) Canister
- Check Pipes between Tank Breathing and Throttle Body
The YOUCANIC Full System Scanner can read and clear fault codes on all control modules.
Fault Codes
- P0441 – Evaporative Emission System Incorrect Purge Flow
- P0442 – Evaporative Emission Control System Leak Detected (Small Leak)
- P0444 – Evaporative Emission System Purge Control Valve Circuit Open
- P0455 – System Gross Leak Evaporative Emission
- P0456 – EVAP System Leak Detected (Very Small Leak)
- P0496 – EVAP Flow During a Non-Purge Condition
Frequently Asked Questions
How much does it cost to repair the purge valve on a VW?
The purge valve is straightforward to replace. Replacing it on a Volkswagen usually takes less than one hour. Volkswagen dealers or auto mechanic shops charge around $180 to $300. If DIY, the average replacement parts price is between $30 and $90.
Can you drive a VW that has a bad purge valve?
While driving the vehicle with a bad purge valve is possible, we do not recommend doing so for an extended time. Your vehicle no longer meets the emission standards.
Does my VW have an EVAP purge valve?
Yes. Around all Volkswagen vehicles with gasoline engines started in 2000 and later had a purge valve. That includes the VW Jetta, Atlas, Bora, Passat, Golf, CC, and EOS.
How do you test a VW purge valve?
The easier way to test a VW control purge valve is to see if it opens and closes when you supply power. Use a pair of clips to connect 12 volts to it. You should hear the valve operate. Further, you can test if the purge valve opens and closes by blowing through it as you switch the power on/off.
Where to buy the Volkswagen purge valve?
Online. Check out these Volkswagen purge valve listings. Bosch usually makes the OEM Volkswagen purge valve. The most common part number for the VW purge valve is 0280142431.
We hope you find the Troubleshooting Purge Valve (N80) Volkswagen guide helpful. Check these troubleshooting and repair guides for more help on your Volkswagen.
