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P0686 Diagnostic Trouble Code Discussion for October 2020

Engine Controls Ignition Relay Control Circuit Low Voltage


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Trouble Ticket Help Requests for DTC P0686
Help Request Posted
2003 Mini Cooper S 1.6L Cranks will not run VIN: WMWRE33463
P0686: Pcm relay circuit low voltage. Car was towed in, will crank fine but will not run. Found the dme power relay was not being grounded by the pcm. No fault codes in the theft system. Was able to bypass relay and power up all circuits affected but still will not run. No spark or injector pu...
October 06, 2020