Possible causes – Faulty Intake Air Heater Relay– Intake Air Heater Relay harness is open or shorted– Intake Air Heater Relay circuit poor electrical connection When is the obd code mean? The Engine Control Module (ECM) sends a bias voltage on diagnostic circuits one and two. If this voltage is high with the relay ON,…
Tag: JEEP
P0113 JEEP Intake Air Temperature Sensor 1 Circuit High
Possible causes – Faulty Intake Air Temperature (IAT) sensor– Dirty air filter– Intake Air Temperature (IAT) sensor harness is open or shorted– Intake Air Temperature (IAT) sensor circuit poor electrical connection When is the obd code mean? – An excessively high voltage from the sensor is sent to ECM. Symptoms – Engine Light ON (or…
P0111 JEEP Intake Air Temperature Sensor 1 Performance
Possible causes – Faulty Intake Air Temperature (IAT) sensor– Dirty air filter– Intake Air Temperature (IAT) sensor harness is open or shorted– Intake Air Temperature (IAT) sensor circuit poor electrical connection When is the obd code mean? An excessively low or high voltage from the sensor is sent to ECM. Symptoms – Engine Light ON…
P0508 JEEP Idle Air Control Valve Sense Circuit Low
Possible causes – Faulty Idle Air Control (IAC) motor– Idle Air Control (IAC) motor harness is open or shorted– Idle Air Control (IAC) motor circuit poor electrical connection When is the obd code mean? The PCM senses a short to ground or battery voltage on any of the control circuits for 2.75 seconds while the…
P0509 JEEP Idle Air Control Valve Sense Circuit High
Possible causes – Faulty Idle Air Control (IAC) motor– Idle Air Control (IAC) motor harness is open or shorted– Idle Air Control (IAC) motor circuit poor electrical connection When is the obd code mean? The PCM senses a short to ground or battery voltage on any of the control circuits for 2.75 seconds while the…
P0505 JEEP Idle Control System Malfunction
Possible causes – Faulty Idle Control System motor– Idle Control System motor harness is open or shorted– Idle Control System motor circuit poor electrical connection– Faulty Powertrain or Engine Control Module– Vaccum leaks or damaged hoses or improper routing Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Engine hard to start– Rough…
P0351 JEEP Ignition Coil 1 Circuit
Possible causes – Faulty Ignition Coil 1– Ignition Coil 1 harness is open or shorted– Ignition Coil 1 circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the obd code mean? Each ignition circuit is continuously monitored by the Engine Control Module (ECM). The test fails when the ECM does not receive a…
P0352 JEEP Ignition Coil 2 Circuit
Possible causes – Faulty Ignition Coil 2– Ignition Coil 2 harness is open or shorted– Ignition Coil 2 circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the obd code mean? Each ignition circuit is continuously monitored by the Engine Control Module (ECM). The test fails when the ECM does not receive a…
P0353 JEEP Ignition Coil 3 Circuit
Possible causes – Faulty Ignition Coil 3– Ignition Coil 3 harness is open or shorted– Ignition Coil 3 circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the obd code mean? Each ignition circuit is continuously monitored by the Engine Control Module (ECM). The test fails when the ECM does not receive a…
P0354 JEEP Ignition Coil 4 Circuit
Possible causes – Faulty Ignition Coil 4– Ignition Coil 4 harness is open or shorted– Ignition Coil 4 circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the obd code mean? Each ignition circuit is continuously monitored by the Engine Control Module (ECM). The test fails when the ECM does not receive a…