The most common causes of P0442 code are the following: Malfunctioning fuel cap. Leak or damage in the EVAP system line. Leak or damage in the charcoal canister.

What codes will a bad gas cap cause?

Q: What Codes Will a Bad Gas Cap Cause? Several engine problems can set off the check engine light. However, when your car has a failing gas cap, it sets out a P0455 or a P0457 code to the car’s ECM. The codes mean that your vehicle has a massive leak or a loose gas cap problem.

What causes code p0442?

Causes of the P0442 OBDII Trouble Code. The P0442 error code is generally caused by some type of leak in the evaporative emissions system. Some of the primary constituents of this system are the fuel cap, filler neck, evaporative system hose, carbon canister, evaporative vent valve, or evaporative purge valve.

What does code p0442 mean?

The on-board diagnostics, or OBD, code P0442 can often be fixed by tightening the gas cap or replacing the gas cap. The code indicates a small leak in the evaporative emissions, or EVAP, system, which is commonly caused by a loose gas cap or a small hole in the cap.

What does check engine code p0442 mean?

What the P0442 code means. P0442 is present in vehicles that have a small leak in the EVAP system. The ECU carefully monitors the EVAP system for any leaks or irregularities, when a small leak is detected the ECU set a Check Engine Light to be displayed on the dashboard.

What does emission code p0442 mean?

The P0442 code means that the control module has detected a small leak in the Evaporative Emission (EVAP). The loose fuel tank filler cap is the most common cause that triggers the P0442 code.