P2125
DTC P2125
Circuit Description
The accelerator pedal position (APP) sensor 2 is a potentiometer type sensor with the following 3 circuits:
* A 5-volt reference circuit
* A low reference circuit
* A signal circuit
The control module provides the APP sensor a 5-volt reference circuit and a low reference circuit. The APP sensor then provides the control module a signal voltage proportional to pedal movement. The APP sensor 2 signal voltage is low at rest and increases as the pedal is depressed. When the control module detects that the APP sensor 2 signal or the APP sensor 5-volt reference voltage is outside the predetermined range, DTC P2125 sets.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P2125 Accelerator Pedal Position (APP) Sensor 2 Circuit
Conditions for Running the DTC
* DTC P2107 is not set.
* The ignition is ON.
* The ignition voltage is more than 5.23 volts.
Conditions for Setting the DTC
* The APP sensor 2 voltage is less than 0.235 volt or more than 4.487 volts.
OR
* The APP sensor 2 5-volt reference voltage is less than 4.54 volts or more than 5.21 volts.
Action Taken When the DTC Sets
* The control module stores the DTC information into memory when the diagnostic runs and fails.
* The malfunction indicator lamp (MIL) will not illuminate.
* The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Failure Records.
* The driver information center, if equipped, may display a message.
Conditions for Clearing the DTC
* A current DTC Last Test Failed clears when the diagnostic runs and passes.
* A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic.
* Clear the DTC with a scan tool.
Test
