P0220

Diagnostic Chart:

Wiring Diagram:

Circuit Description
The Accelerator Pedal Position (APP) module provides a voltage signal that changes relative to accelerator pedal position. There are three sensors located within the APP module that are scaled differently. This is a type D DTC.

Conditions for Setting the DTC

^ The reference voltage on APP 2 less than 4.8 volts.
^ The condition met for 2 seconds.

Action Taken When the DTC Sets
If DTC P0220 is stored, the PCM will turn ON the Service Throttle Soon lamp and limit power.

Conditions for Clearing the MIL/DTC

^ A History DTC will clear after forty consecutive warm-up cycles during which the diagnostic does not fail (coolant temperature has risen 5°C (40°F) from the start up coolant temperature and the engine coolant temperature exceeds 71°C (160°F) during that same ignition cycle.
^ Use of a Scan tool will clear the DTC codes.

Diagnostic Aids
There are no driveability issues associated with the APP module unless a DTC is present. The most likely cause of this DTC are poor connections or the sensor itself. The least likely is a PCM problem.

All 5 volt reference circuits must be checked for a proper reference voltage. The voltmeter accuracy is important.

Test Description
The number(s) below refer to the Step number(s) on the Diagnostic Table.

2. This Step will determine if there is a good voltage reference.