SOFTWARE GP 1538414 - Caterpillar

The Electronic Control Module (ECM) detects the following conditions:
Either the duty cycle is greater than 95 percent or less than 7 percent for one second, or the sensor frequency is greater than 1000 Hz or less than 150 Hz for two seconds.
The ECM has been powered for at least three seconds.System Response:The ECM sets the desired engine speed to programmed low idle. The Caterpillar Electronic Technician (ET) will indicate a throttle position of 0 percent while this diagnostic code is active.Possible Performance Effect:The engine will remain in low idle while this diagnostic code is active.Troubleshooting:Test Step 1. Perform the following diagnostic procedure: "Throttle Position Sensor Circuit - Test"Results:
OK - STOP