Conditions Which Generate This Code:
The ECM detects the following conditions:
• The signal frequency from the accelerator pedal position sensor is less than 150 Hz or the signal
frequency is greater than 1050 Hz for more than two seconds.
• The ECM has been powered for at least three seconds.
System Response:
The ECM sets the “Throttle Position” to 0%. “DIAG” will be displayed next to the status for “Throttle Position” on the electronic service tool.
Possible Performance Effect:
The engine will remain at low idle while the diagnostic code is active.
Troubleshooting:
Perform the following diagnostic procedure:
“Accelerator Pedal (Throttle) Position Sensor Circuit – Test”
Results:
• OK – STOP.
