P0651 Diagnostic Trouble Code Discussion for December 2014
5-Volt Reference 2 Circuit Malfunction
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| Help Request | Posted | |
| 2012 Volkswagen Passat TDI SE 2.0L MIL Lamp on, Derate VIN: 1VWBN7A31C P0651: Reference voltage b open. Hello everyone. This VW came to us with the check engine light and DEF lights on and customer had a complaint of it derating. It's been to the dealer multiple times for the same problem with no luck. Reference voltages and glowplugs tested fine. No sign of any... |
December 30, 2014 |
