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…

P0430 BMW Catalytic Converter Conversion 2

Possible causes – Three way catalyst converter Bank 2– 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 P0430 code means that the vehicle’s control module has detected that the three-way…

P0221 BMW Throttle Valve Potentiometer 2 Plausibility To Air Mass

Possible causes – Throttle Position Sensor (TPS) harness is open or shorted– Throttle Position Sensor (TPS) circuit poor electrical connection– Faulty Throttle Position Sensor (TPS)– Fault Electric Throttle Control Actuator (or Throttle Body Motor)– Accelerator Pedal Position Sensor (APP) When is the obd code mean? An unexpected voltage from the Throttle Position Sensor (TPS) is…

P0370 BMW Timing Reference High Resolution Signal A Malfunction

Possible causes – Timing Reference Optical Sensor harness is open or shorted– Timing Reference Optical Sensor circuit poor electrical connection– Faulty Timing Reference Optical Sensor– Damaged Powertrain Control Module (PCM) When is the obd code mean? A number of high resolution pulses missing per every 8 cam reference pulses. Symptoms – Engine Light ON (or…

P0373 BMW Timing Reference High Resolution Signal A Intermittent/Erratic Pulses

Possible causes – Timing Reference Optical Sensor harness is open or shorted– Timing Reference Optical Sensor circuit poor electrical connection– Faulty Timing Reference Optical Sensor– Damaged Powertrain Control Module (PCM) When is the obd code mean? Some high resolution pulses are intermittent from the optical sensor to the PCM Symptoms – Engine Light ON (or…

P0440 BMW Tank Venting System Function

Possible causes – Missing or loose fuel cap– Incorrect fuel filler cap used– Fuel filler cap remains open or fails to close– Foreign matter caught in fuel filler cap– EVAP canister or fuel tank leaks– EVAP system hose leaking– Fuel tank leaking Tech description The P0440 code means that the control module has detected a…

P0442 BMW Evaporative Emission System Leak Detected Small Leak

Possible causes – Missing or loose fuel cap– Incorrect fuel filler cap used– Fuel filler cap remains open or fails to close– Foreign matter caught in fuel filler cap– EVAP canister or fuel tank leaks– EVAP system hose leaking– Fuel tank leaking Tech description The P0442 code means that the control module has detected a…

P0313 BMW Misfire Detected With Low Fuel

Possible causes – Not enough fuel in tank– Faulty spark plugs plug wires– Faulty injectors– Vacuum leaks– Faulty Fuel Sender Unit– Fuel Sender Unit harness open or shorted– Fuel Sender Unit poor electrical connection When is the obd code mean? Misfire detected with low fuel Symptoms – Engine Light ON (or Service Engine Soon Warning…