Possible causes – Faulty Evaporative Emission (EVAP) Purge Solenoid Control– Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted– Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection When is the obd code mean? An improper voltage signal is sent to Engine Control Module (ECM) through the valve. Symptoms – Engine Light…
Tag: JEEP
P0452 JEEP EVAP Pressure Switch Stuck Closed
Possible causes – Faulty Evaporative Emission System (EVAP) Pressure sensor– EVAP purge hose/tube obstruction– Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted– Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection When is the obd code mean? An excessively low voltage from the sensor is sent to Engine Control Module (ECM)….
P0489 JEEP Exhaust Gas Recirculation Throttle Control Circuit A Circuit Low
Possible causes – Faulty Exhaust Gas Recirculation (EGR) Solenoid– Exhaust Gas Recirculation (EGR) Solenoid harness is open or shorted– Exhaust Gas Recirculation (EGR) Solenoid circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0489 JEEP OBD Code Description The Engine Control Module (ECM) does not detect voltage on the…
P0490 JEEP Exhaust Gas Recirculation Throttle Control Circuit A Circuit High
Possible causes – Faulty Exhaust Gas Recirculation (EGR) Solenoid– Exhaust Gas Recirculation (EGR) Solenoid harness is open or shorted– Exhaust Gas Recirculation (EGR) Solenoid circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0490 JEEP OBD Code Description The Engine Control Module (ECM) does not detect voltage on the…
P1404 JEEP EGR Position Sensor Rationality Closed
Possible causes – Faulty Exhaust Gas Recirculation (EGR) valve– Faulty Exhaust Gas Recirculation (EGR) valve solenoid– Exhaust Gas Recirculation (EGR) valve carbon blockage When is the obd code mean? The Engine Control Module (ECM) is detecting Exhaust Gas Recirculation (EGR) flow or movement when it is not expected Symptoms – Engine Light ON (or Service…
P0480 JEEP Cooling Fan 1 Control Circuit
Possible causes – Faulty fan control relay– Fan control relay harness is open or shorted– Fan control relay circuit poor electrical connection– Faulty cooling fan 1– Fan cooling fan harness is open or shorted– Fan cooling fan circuit poor electrical connection When is the obd code mean? The P0480 code is detected when the Engine…
P0481 JEEP Cooling Fan 2 Control Circuit
Possible causes – Faulty fan control relay– Faulty cooling fan 2– Fan control relay harness is open or shorted– Fan control relay circuit poor electrical connection– Fan cooling fan harness is open or shorted– Fan cooling fan circuit poor electrical connection – Faulty Engine Control Module (ECM) When is the obd code mean? The P0481…
P0133 JEEP O2 Sensor Circuit Slow Response Bank 1 Sensor 1
Possible causes – Faulty Front Heated Oxygen Sensor Bank 1– Front Heated Oxygen Sensor Bank 1 harness is open or shorted– Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Inappropriate fuel pressure– Faulty fuel injectors– Intake air leaks may be faulty– Exhaust gas leaks Tech description Replacing the Front Heated Oxygen Sensor Bank…
P0643 JEEP Sensor Reference Voltage 1 Circuit High
Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit When is the obd code mean? The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher than expected Symptoms – Engine Light ON (or…
P0653 JEEP 5 Volt Sensor Reference 2 Circuit High
Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit When is the obd code mean? The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher than expected Symptoms – Engine Light ON (or…