Tag: MITSUBISHI

P0421 MITSUBISHI Warm Up Catalyst Efficiency Below Threshold- Cylinders 1-4

Possible causes – Warm Up Three Way Catalytic converter deterioration or malfunction– Exhaust system leaks– Loose front or rear HO2Ss– Faulty front heater O2 sensor– O2 sensors harness is open or shorted– O2 sensors poor electrical connection Tech description As the code description implies the P0421 code means that the vehicle’s control module has detected…

P0431 MITSUBISHI Warm Up Catalyst Efficiency Below Threshold- Cylinders 2-3

Possible causes – Warm Up Three Way Catalytic converter deterioration or malfunction– Exhaust system leaks– Loose front or rear HO2Ss– Faulty front heater O2 sensor– O2 sensors harness is open or shorted– O2 sensors poor electrical connection Tech description As the code description implies the P0431 code means that the vehicle’s control module has detected…

P0689 MITSUBISHI Auto Shutdown Relay Sense 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 Tech description Check all the ECM fuses, if the fuses are OK try replacing the ASD relay. Symptoms – Engine Light ON (or…

P0690 MITSUBISHI Auto Shutdown Relay Sense 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 Tech description Check all the ECM fuses, if the fuses are OK try replacing the ASD relay. Symptoms – Engine Light ON (or…

P0688 MITSUBISHI Auto Shutdown 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 Tech description Check all the ECM fuses, if the fuses are OK try replacing the ASD relay. Symptoms – Engine Light ON (or Service…

P0221 MITSUBISHI Throttle Position Sensor 2 Performance

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…

P0234 MITSUBISHI Turbocharger Wastegate System Malfunction

Possible causes – Turbocharger wastegate actuator failure– Charging pressure control system faulty Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0234 MITSUBISHI OBD Code Description The boost pressure sensor responds to pressure changes in the intake manifold. This pressure is created by the turbocharger and changes with accelerator pedal position (APP) and…

P0586 MITSUBISHI Speed Control Vent Control Circuit

Possible causes – Open or short speed control vent circuit– Poor speed control vent electrical connection– Faulty Speed Conrtol Vent Solenoid When is the obd code mean? Open or shorted condition in the vent solenoid circuit Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P0701 MITSUBISHI EEPROM System Malfunction

Possible causes – Open or short transmission control system circuit– Poor transmission control system electrical connection– Check powers and grounds to Transmission Control Module (TCM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light)