Possible causes – Faulty Heated Oxygen Sensor Bank 1 Sensor 2– Heated Oxygen Sensor Bank 1 Sensor 2 harness is open or shorted– Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection Symptoms – Engine Light ON (or

Possible causes – Faulty Heated Oxygen Sensor Bank 1 Sensor 3– Heated Oxygen Sensor Bank 1 Sensor 3 harness is open or shorted– Heated Oxygen Sensor Bank 1 Sensor 3 circuit poor electrical connection Tech notes Replacing the O2 Sensor

Possible causes – Faulty Ignition Coil 1– Ignition Coil 1 harness is open or shorted– Ignition Coil 1 circuit poor electrical connection– Faulty Powertrain Control Module (PCM) When is the code detected? Each ignition circuit is continuously monitored by the

Possible causes – Faulty Ignition Coil 2– Ignition Coil 2 harness is open or shorted– Ignition Coil 2 circuit poor electrical connection– Faulty Powertrain Control Module (PCM) When is the code detected? Each ignition circuit is continuously monitored by the

Possible causes – Faulty Ignition Coil 3– Ignition Coil 3 harness is open or shorted– Ignition Coil 3 circuit poor electrical connection– Faulty Powertrain Control Module (PCM) When is the code detected? Each ignition circuit is continuously monitored by the

Possible causes – Faulty Ignition Coil 4– Ignition Coil 4 harness is open or shorted– Ignition Coil 4 circuit poor electrical connection– Faulty Powertrain Control Module (PCM) When is the code detected? Each ignition circuit is continuously monitored by the

Possible causes – Faulty Ignition Coil 5– Ignition Coil 5 harness is open or shorted– Ignition Coil 5 circuit poor electrical connection– Faulty Powertrain Control Module (PCM) When is the code detected? Each ignition circuit is continuously monitored by the

Possible causes – Faulty Ignition Coil 6– Ignition Coil 6 harness is open or shorted– Ignition Coil 6 circuit poor electrical connection– Faulty Powertrain Control Module (PCM) When is the code detected? Each ignition circuit is continuously monitored by the

Possible causes – Faulty Ignition Coil 7– Ignition Coil 7 harness is open or shorted– Ignition Coil 7 circuit poor electrical connection– Faulty Powertrain Control Module (PCM) When is the code detected? Each ignition circuit is continuously monitored by the

Possible causes – Faulty Ignition Coil 8– Ignition Coil 8 harness is open or shorted– Ignition Coil 8 circuit poor electrical connection– Faulty Powertrain Control Module (PCM) When is the code detected? Each ignition circuit is continuously monitored by the

Possible causes – Faulty Instrument Cluster– Instrument Cluster harness is open or shorted– Instrument Cluster circuit poor electrical connection– Faulty PCM When is the code detected? If the fault detection circuit senses a voltage other than what is expected, the

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 code detected? – An excessively 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 code detected? When the PCM senses

Possible causes – Faulty knock sensor– Knock sensor circuit poor electrical connection– Knock sensor harness is open or shorted– Faulty Powertrain Control System (PCM) Tech notes The P0325 code means that the Knock Sensor is not working properly. Problems with

Possible causes – Faulty knock sensor– Knock sensor circuit poor electrical connection– Knock sensor harness is open or shorted– Faulty Powertrain Control System (PCM) Tech notes The P0327 code means that the Knock Sensor is not working properly. Problems with

Possible causes – Faulty knock sensor– Knock sensor circuit poor electrical connection– Knock sensor harness is open or shorted– Faulty Powertrain Control System (PCM) Tech notes The P0332 code means that the Knock Sensor is not working properly. Problems with

Possible causes – Faulty Malfunction Indicator Lamp Bulb– Malfunction Indicator Lamp Bulb harness is open or shorted– Malfunction Indicator Lamp Bulb circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the code detected? If the fault detection circuit

Possible causes – Faulty Manifold Absolute Pressure sensor– Manifold Absolute Pressure harness is open or shorted– Manifold Absolute Pressure sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the code detected? An excessively high voltage from the

Possible causes – Faulty Manifold Absolute Pressure sensor– Manifold Absolute Pressure harness is open or shorted– Manifold Absolute Pressure sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the code detected? An excessively low or high voltage

Possible causes – Faulty Manifold Absolute Pressure sensor– Manifold Absolute Pressure harness is open or shorted– Manifold Absolute Pressure sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the code detected? An excessively low or high voltage