Tag: BMW

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 OBD Code Description ECM power relay control circuit low

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)

P1554 BMW Crankshaft Inlet Camshaft

Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1554 BMW OBD Code Description Engine position system A performance bank 1

P0013 BMW Variable Camshaft Timing B Circuit Continuity Bank 1

Possible causes – Variable Camshaft Timing Circuit open or shorted– Variable Camshaft Timing Circuit poor electrical connection– Failed Camshaft Actuator– Engine mechanical problems Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0013 BMW OBD Code Description Variable Camshaft Timing ‘B’ (VANOS) Circuit Continuity

P2098 BMW Oxygen Sensor Before Catalytic Converter 2 Trim Control

Possible causes – Pre cat or downstream post cat o2 sensor harness is open or shorted– Pre cat or downstream post cat o2 sensor circuit poor electrical connection– Exhaust system leak– Faulty pre cat or downstream post cat o2 sensor Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P2098 BMW OBD Code…

P2418 BMW DMTL Solenoid Valve Activation

Possible causes – Switching valve harness is open or shorted– Switching valve electrical circuit poor connection– Faulty Switching valve Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P0420 BMW Catalytic Converter Conversion

Possible causes – Three way catalyst converter Bank 1– Exhaust tube– Intake air leaks– Fuel injectors may be faulty– Fuel injector leaks– Spark plugs may be faulty– Improper ignition timing– Engine Control Module (ECM) Tech description As the code description implies the P0420 code means that the vehicle’s control module has detected that the three-way…