Causes and Fixes P0442 Code: Evaporative Emission Control System Leak Detected (Small Leak)
Автор: HVAC Mechanic
Загружено: 2025-03-18
Просмотров: 16657
How to fix P0442 Code: Evaporative Emission Control System Leak Detected (Small Leak)
A P0442 code is set when the EVAP system does not hold pressure, and the computer (ECM/PCM) detects a leak.
The EVAP system sends gas vapors from the gas tank to the engine to be burnt away so they don't escape into the atmosphere.
Common causes of a P0442 code include a bad gas cap, system leak, bad purge valve, bad vent valve, pressure sensor, damaged hoses, and wiring issues.
When an EVAP code is fixed a Drive Cycle is usually needed to fully clear the code.
Possible Causes of a P0442 Code:
Bad Gas Cap
Bad Purge Valve (Will usually give other code.)
Bad Vent Valve (Will usually give other code.)
Bad Charcoal Canister
EVAP Leak
Bad Pressure Sensor (Will usually give other code.)
Wiring Issue
How To Diagnose and Fix EVAP Codes and Pass an Emission Test Video
• How To Diagnose and Fix EVAP Codes and Pas...
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