C15 – 0091-08 Throttle Position Invalid (32)

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.

Perform the following diagnostic procedure:
“Accelerator Pedal (Throttle) Position Sensor Circuit – Test”

• OK – STOP.

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