Subaru Error Code P0442: How to Fix It

Q: Can I drive my Subaru with P0442 error code?

Yes, you can drive safely with P0442 as it doesn't affect engine performance or safety. However, you should fix it soon as it may cause your vehicle to fail emissions testing and could lead to slightly reduced fuel economy.

Q: How much does it cost to fix Subaru P0442?

Repair costs vary widely depending on the cause. A new gas cap costs $15-30, EVAP hoses cost $20-50, and a purge solenoid valve costs $50-150. Professional diagnosis and repair can range from $200-600 depending on the specific problem.

Q: Will P0442 clear itself on Subaru?

The P0442 code will not clear itself automatically. Even if the underlying problem is fixed, you'll need to clear the code manually using an OBD2 scanner or by disconnecting the battery for 15-20 minutes.

Q: What causes P0442 to keep coming back?

Recurring P0442 codes are often caused by deteriorated EVAP hoses that develop new cracks over time, a failing vent control valve, or small leaks in the carbon canister that weren't initially detected during diagnosis.

Abstract

The Subaru P0442 error code indicates a small leak has been detected in your vehicle's Evaporative Emission Control (EVAP) system. This system prevents fuel vapors from escaping into the atmosphere, and while this error won't cause immediate driving issues, it should be addressed to maintain proper emissions control and pass state inspections.