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
– 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 Control Module (ECM) has detected a high voltage condition to the ECM.
P0687 Information for specific makes
P0687 AUDI
P0687 BMW
P0687 CHRYSLER
P0687 DODGE
P0687 ISUZU
P0687 JEEP
P0687 SUZUKI
P0687 VOLKSWAGEN
P0687 BMW
P0687 CHRYSLER
P0687 DODGE
P0687 ISUZU
P0687 JEEP
P0687 SUZUKI
P0687 VOLKSWAGEN