P0446 Diagnostic Trouble Code Discussion for October 2016
EVAP Vent System Performance
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| Help Request | Posted | |
| 2009 Chevrolet Aveo LT 1.6L MIL Lamp on VIN: KL1TD56E59 P0446: vent system performance. This car came to us with EVAP codes the tech I had at the time diagnosed it as a bad purge valve. We replaced that and the light came back on. We have since replaced the PCM, pressure sensor, the vent solenoid, and the purge valve. Still get EVAP codes. I also... |
October 08, 2016 | |
| 2008 GMC Sierra 1500 WT 4.8L MIL Lamp on VIN: 3GTEC13CX8 P0446: Evap Vent Performance. ... This truck has the MIL light on with Code P0446 Vent Performance Problem. Was in last week and replaced the Canister Vent Valve under the truck, New filter and blew out the hose. Customer said the light returned a couple days later. Rechecked and same code... |
October 11, 2016 |
