P0686 Citroen Engine Control Module Power Relay Control Circuit Low

P0686 Citroen Engine Control Module Power Relay Control Circuit Low Possible causes – Weak battery- Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0686 Citroen Description…

P0686 Chrysler Engine Control Module Power Relay Control Circuit Low

P0686 Chrysler Engine Control Module Power Relay Control Circuit Low Possible causes – Weak battery- Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0686 Chrysler Description…

P0686 Chevrolet Engine Control Module Power Relay Control Circuit Low

P0686 Chevrolet Engine Control Module Power Relay Control Circuit Low Possible causes – Weak battery- Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0686 Chevrolet Description…

P0686 Cadillac Engine Control Module Power Relay Control Circuit Low

P0686 Cadillac Engine Control Module Power Relay Control Circuit Low Possible causes – Weak battery- Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0686 Cadillac Description…

P0686 Buick Engine Control Module Power Relay Control Circuit Low

P0687 Buick Engine Control Module Power Relay Control Circuit High Possible causes – Weak battery- Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0687 Buick Description…

P0686 BMW Engine Control Module Power Relay Control Circuit Low

P0686 BMW Engine Control Module Power Relay Control Circuit Low Possible causes – Weak battery- Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0686 BMW Description…

P0686 Audi Engine Control Module Power Relay Control Circuit Low

P0686 Audi Engine Control Module Power Relay Control Circuit Low Possible causes – Weak battery- Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0686 Audi Description…

P0686 Acura Engine Control Module Power Relay Control Circuit Low

P0686 Acura Engine Control Module Power Relay Control Circuit Low Possible causes – Weak battery- Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0686 Acura Description…

P0686 Engine Control Module Power Relay Control Circuit Low

P0686 Engine Control Module Power Relay Control Circuit Low Possible causes – Weak battery- Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0686 Description The Engine…