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P0688 Diagnostic Trouble Code Discussion for January 2020

ASD Relay Sense Circuit Low

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Trouble Ticket Help Requests for DTC P0688
Help Request Posted
2006 Volkswagen Passat 2.0T 2.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: WVWEK73C76
P0688: ecm power relay load circuit - J271 open circuit. ... 2006 VW Passat 2.0T and has me trying to figure out what exactly is going on with this thing. Charged battery prior to starting vehicle. DTC's: 00048-oxygen (lambda) sensor B1 S1: heating circuit: malfunction / open circuit, P0030-no signal/no commu...
January 14, 2020