P0687 Citroen Engine Control Module Power Relay Control Circuit High

P0687 Citroen 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 Citroen Description…

P0687 Chrysler Engine Control Module Power Relay Control Circuit High

P0687 Chrysler 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 Chrysler Description…

P0687 Chevrolet Engine Control Module Power Relay Control Circuit High

P0687 Chevrolet 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 Chevrolet Description…

P0687 Cadillac Engine Control Module Power Relay Control Circuit High

P0687 Cadillac 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 Cadillac Description…

P0687 Buick Engine Control Module Power Relay Control Circuit High

P0688 Buick Electronic Control Module Power Relay Control Circuit Open 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 Tech description Check all the ECM fuses, if the fuses are OK try replacing…

P0687 BMW Engine Control Module Power Relay Control Circuit High

P0687 BMW 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 BMW Description…

P0687 Audi Engine Control Module Power Relay Control Circuit High

P0687 Audi 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 Audi Description…

P0687 Acura Engine Control Module Power Relay Control Circuit High

P0687 Acura 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 Acura Description…

P0687 Engine Control Module Power Relay Control Circuit High

P0687 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 Description The Engine…