PAN 8M2931 - Caterpillar

The Electronic Control Module (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.
Diagnostic codes for the 8 Volt sensor supplies are not active.System Response:Limp home mode is activated.The ECM sets the "Throttle Position" to "0%". "DIAG" will be displayed next to the status for "Throttle Position" on the electronic service tool. The diagnostic code can be viewed on a display module or the electronic service tool. The diagnostic code will be logged if the engine is running. The diagnostic code will not be logged if the engine is cranking.Possible Performance Effect:The engine will remain at low idle while the diagnostic code is active.Throttle inputs are ignored by the ECM until the fault is repaired.Throttle inputs will also be ignored by the ECM until the keyswitch has been turned to the OFF position and then back to the ON position.Troubleshooting:This diagnostic code indicates that the frequency of a digital throttle signal is out of the normal range.Test Step 1. Results:
OK - STOP