Possible causes – Faulty Rear Heated Oxygen Sensor Bank 1– Rear Heated Oxygen Sensor Bank 1 harness is open or shorted– Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Intake air leaks– Exhaust gas leaks– Inappropriate fuel pressure–

Possible causes – Faulty short runner valve assembly– Short runner valve harness is open or shorted– Short runner valve circuit poor electrical connection– Faulty Powertrain Control Module (PCM) Tech notes There is a bulletin for the following Dodge models: 2007

Possible causes – Faulty Short Runner Valve– Short Runner Valve harness is open or shorted– Short Runner Valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1288 DODGE Description Wide open throttle condition-short

Possible causes – Faulty spark plug or coil boot– Faulty Ignition Coil 1– Ignition Coil 1 harness is open or shorted– Ignition Coil 1 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Engine

Possible causes – Faulty spark plug or coil boot– Faulty Ignition Coil 2– Ignition Coil 2 harness is open or shorted– Ignition Coil 2 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Engine

Possible causes – Faulty spark plug or coil boot– Faulty Ignition Coil 3– Ignition Coil 3 harness is open or shorted– Ignition Coil 3 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Engine

Possible causes – Faulty spark plug or coil boot– Faulty Ignition Coil 4– Ignition Coil 4 harness is open or shorted– Ignition Coil 4 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Engine

Possible causes – Faulty spark plug or coil boot– Faulty Ignition Coil 5– Ignition Coil 5 harness is open or shorted– Ignition Coil 5 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Engine

Possible causes – Faulty spark plug or coil boot– Faulty Ignition Coil 6– Ignition Coil 6 harness is open or shorted– Ignition Coil 6 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Engine

Possible causes – Faulty spark plug or coil boot– Faulty Ignition Coil 7– Ignition Coil 7 harness is open or shorted– Ignition Coil 7 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Engine

Possible causes – Faulty spark plug or coil boot– Faulty Ignition Coil 8– Ignition Coil 8 harness is open or shorted– Ignition Coil 8 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Engine

Possible causes – Faulty Throttle Actuator Control (TAC) module– Throttle Actuator Control (TAC) module harness is open or shorted– Throttle Actuator Control (TAC) module circuit poor electrical connection (loose or broken wires) Symptoms – Engine Light ON (or Service Engine

Possible causes – Faulty Throttle Actuator Control Actuator– Throttle Actuator Control Actuator harness is open or shorted– Throttle Actuator Control Actuator circuit poor electrical connection When is the code detected? Engine Control Module (ECM) detects short in both circuits between

Possible causes – Faulty Transmission Control Module (TCM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1631 DODGE Description Transmission Control Module (TCM) Internal Processor Clock Performance

Possible causes – Faulty Turbocharger due to foreign object damage. P2563 DODGE Description The variable Geometry Turbocharger (VGT) is electronically activated by the Electronic Turbo Actuator. The Electronic Turbo Actuator is a smart device that receives information via the CAN

Possible causes – Faulty Vacuum Reservoir Solenoid– Vacuum Reservoir Solenoid harness is open or shorted– Vacuum Reservoir Solenoid circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Viscous/Cabin Heater Relay– Viscous/Cabin Heater Relay harness is open or shorted– Viscous/Cabin Heater Relay circuit poor electrical connection When is the code detected? The ECM has detected an excessive current condition on the Viscous/Cabin Heater Relay

Possible causes – Fuel delivery system– Engine Coolant Temperature (ECT) sensor or wiring connectors– MAP sensor or wiring connectors– O2 sensor wiring or connectors– Engine mechanical system Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1129 DODGE

Possible causes – Fuel delivery system– Manifold Absolute Pressure (MAP) sensor or wiring connectors– O2 sensor wiring or connectors– Engine mechanical system– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1128 DODGE

Possible causes – Fuel injection pump ground circuit open– Battery defective Symptoms – Engine Light ON (or Service Engine Soon Warning Light)