Possible causes – Faulty Air Conditioning Clutch Relay– Air Conditioning Clutch Relay harness is open or shorted– Air Conditioning Clutch Relay circuit poor electrical connection When is the obd code mean? The P0645 code is stored if an open or short exists in A/C clutch relay control circuit. Symptoms – Engine Light ON (or Service…
Tag: JEEP
P0412 JEEP Secondary Air Injection Switchover Solenoid Circuit
Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection When is the obd code mean? The DTC P0412 is detected the the AIR vacuum control solenoid circuit not operating as desired by the PCM. Symptoms – Engine Light ON (or Service Engine…
P0415 JEEP Secondary Air Injection System Switching Valve B Circuit Malfunction
Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection When is the obd code mean? The DTC P0415 is detected the the AIR vacuum control solenoid circuit not operating as desired by the PCM. Symptoms – Engine Light ON (or Service Engine…
P0418 JEEP Secondary Air Injection System Relay A Circuit Malfunction
Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection When is the obd code mean? The DTC P0418 is detected the the AIR vacuum control solenoid circuit not operating as desired by the PCM. Symptoms – Engine Light ON (or Service Engine…
P0073 JEEP Ambient Air Temperature Sensor Circuit High
Possible causes – Faulty ambient air temperature sensor– Ambient air temperature sensor harness is open or shorted– Ambient air temperature sensor circuit poor electrical connection When is the obd code mean? Ambient temperature sensor input voltage is above the minimum acceptable value. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0073 JEEP…
P0271 JEEP Cylinder 4 Injector Circuit High
Possible causes – Dirty Fuel Injector 4– Faulty Fuel Injector 4– Plugged Fuel Injector 4– Fuel injector 4 harness is open or shorted– Fuel injector 4 circuit poor electrical connection Tech description Clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector. Symptoms – Engine…
P0748 JEEP Governor Pressure Solenoid Circuit Condition
Possible causes – Dirty transmission fluid– Low transmission fluid level– Faulty governor pressure solenoid valve– Governor pressure solenoid valve harness or connectors– Governor pressure solenoid valve circuit is open or shorted When is the obd code mean? Engine Control Module (ECM) detectes an open or shorted condition on the solenoid circuit Symptoms – Engine Light…
P0401 JEEP Exhaust Gas Recirculation System Performance
Possible causes – EGR passage clogged– Faulty EGR Vacuum Modulator Valve– Faulty EGR Valve– Faulty EGR solenoid valve– EGR solenoid valve harness is open or shorted– EGR solenoid valve circuit poor electrical connection– Dead (Weak) battery– Faulty EGR temperature sensor and circuit– Exhaust gas leaks Tech description EGR flow malfunction could be caused by a…
P0406 JEEP Exhaust Gas Recirculation Position Sensor Circuit High
Possible causes – EGR Valve clogged, dirty or leaky– EGR valve damaged/defective– EGR volume control solenoid valve– EGR temperature sensor and circuit– EGR volume control solenoid valve harness is open or shorted– EGR volume control solenoid valve circuit poor electrical connection When is the obd code mean? An improper voltage signal is sent to ECM…
P0404 JEEP Exhaust Gas Recirculation Position Sensor Performance
Possible causes – EGR volume control solenoid valve– EGR volume control solenoid valve harness is open or shorted– EGR volume control solenoid valve circuit poor electrical connection– EGR temperature sensor and circuit When is the obd code mean? An improper voltage signal is sent to ECM through the valve Symptoms – Engine Light ON (or…