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

Possible causes – Faulty Ignition Coil Primary/Secondary– Ignition Coil Primary/Secondary harness is open or shorted– Ignition Coil Primary/Secondary circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the code detected? The test fails when the Engine Control Module

Possible causes – Faulty Ignition/Distributor engine speed sensor– Faulty Crankshaft Position sensor– Ignition/Distributor engine speed sensor harness is open or shorted– Ignition/Distributor engine speed sensor circuit poor electrical connection– Low battery charge– Faulty Engine Control Module (ECM) When is the

Possible causes – Faulty Ignition/Distributor engine speed sensor– Ignition/Distributor engine speed sensor harness is open or shorted– Ignition/Distributor engine speed sensor circuit poor electrical connection– Faulty Crankshaft Position sensor– Low battery charge– Faulty Engine Control Module (ECM) When is the

Possible causes – Faulty Ignition/Distributor engine speed sensor– Ignition/Distributor engine speed sensor harness is open or shorted– Ignition/Distributor engine speed sensor circuit poor electrical connection– Faulty Crankshaft Position sensor– Low battery charge– Faulty Engine Control Module (ECM) When is the

Possible causes – Faulty Input Shaft Speed Sensor– Input Shaft Speed Sensor harness is open or shorted– Input Shaft Speed Sensor circuit poor electrical connection When is the code detected? P0791 code is detected when the input speed sensor voltage

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? An excessively low or

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 low or

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 low voltage

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? The Engine Control Module

Possible causes – Faulty Intake Air Temperature sensor– Intake Air Temperature sensor harness is open or shorted– Intake Air Temperature sensor circuit poor electrical connection When is the code detected? The Engine Control Module (ECM) has detected a high voltage

Possible causes – Faulty Intake Air Temperature sensor– Intake Air Temperature sensor harness is open or shorted– Intake Air Temperature sensor circuit poor electrical connection When is the code detected? The Engine Control Module (ECM) has detected a low voltage

Possible causes – Faulty Intake Air Temperature sensor– Intake Air Temperature sensor harness is open or shorted– Intake Air Temperature sensor circuit poor electrical connection When is the code detected? The Engine Control Module (ECM) has detected a performance fault

Possible causes – Faulty Intake Manifold Tuning Valve (IMTV)– Intake Manifold Tuning Valve harness is open or shorted– Intake Manifold Tuning Valve circuit poor electrical connection When is the code detected? The Engine Control Module (ECM) has detected a high

Possible causes – Faulty Intake Manifold Tuning Valve (IMTV)– Intake Manifold Tuning Valve harness is open or shorted– Intake Manifold Tuning Valve circuit poor electrical connection When is the code detected? The Engine Control Module (ECM) has detected a low

Possible causes – Faulty Intake Manifold Tuning Valve (IMTV)– Intake Manifold Tuning Valve harness is open or shorted– Intake Manifold Tuning Valve circuit poor electrical connection When is the code detected? The Engine Control Module (ECM) has detected an improper

Possible causes – Faulty Intake Valve Control Solenoid Bank 1– Intake Valve Control Solenoid Circuit Bank 1 harness is open or shorted– Intake Valve Control Solenoid Circuit Bank 1 circuit poor electrical connection When is the code detected? An improper

Possible causes – Faulty Intake Valve Control Solenoid Bank 1– Intake Valve Control Solenoid Circuit Bank 1 harness is open or shorted– Intake Valve Control Solenoid Circuit Bank 1 circuit poor electrical connection When is the code detected? An improper

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