P0440 Diagnostic Trouble Code Discussion for May 2007
General EVAP System Failure
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| Help Request | Posted | |
| 2003 Buick Rendezvous CX 3.4L MIL Lamp on VIN: 3G5DAO3E13 P0440: EVAP System No Flow During Purge. This vehicle came to my shop with mil on. Pulled codes po440 evap system problem. I have checked system for leaks. No leaks found. One thing i notice is that the gas cap can be taken off still no pressure loss. I dont know if this is because it has check valve... |
May 08, 2007 |
