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P0688 Diagnostic Trouble Code Discussion for March 2007

ASD Relay Sense Circuit Low

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Trouble Ticket Help Requests for DTC P0688
Help Request Posted
2004 Volkswagen Jetta GLS 1.8L No Start, MIL Lamp on VIN: 3VWSE69M44
P0688: ECM power relay load circuit open circuit. ... throttle response. Initially it was crank no start. I noticed there was no MIL. Left the key on and went to get the laptop. When I returned the MIL was on and the ECM did communicate with many stored faults including P0688...
March 22, 2007