P2400 Diagnostic Trouble Code Discussion for April 2016
EVAP Leak Detection Pump Control Circuit Open
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| Help Request | Posted | |
| 2007 Audi A4 Quattro 2.0L MIL Lamp on VIN: WAUDF78E47 P2400: Emission system LDP control circuit open. Vehicle came in with mil on ... p2400. As suggested by earlier posts, I replace both relays under the ecm with OEM relays. Mil still on upon start up. Found a post online that suggests if 12v is present at green/yellow wire at LDP pump, which I verified , then... |
April 16, 2016 |
