Winger was asking about this code on another thread so here's the info.
This diagnostic tests for a stuck throttle or throttle position sensor. The algorithm only runs when detected throttle position is above 8% and maintains a position within 2% for more than two seconds (there is a longer time duration if under 100% throttle). If the brake pedal is pushed during that time, the diagnostic will fail. This fault will not occur if the brake pedal is applied first and then the throttle pedal is engaged. If this diagnostic runs and fails the ECM will light a momentary ETC lamp.
The ETC lamp will only be active when the condition exists. While the error is active the customer will likely experience a throttle derate. The throttle position must be below 8% with both brake switches off in order for this error to reset.
- When Monitored: Engine on, throttle position maintained above 8% with less than a 2% deviation in two seconds.
- Set Condition: Brake pedal is depressed during the monitored conditions.
Possible Causes
TWO FOOTED DRIVING (AUTOMATIC) OR THREE FOOTED DRIVING (MANUAL)
ACCELERATOR PEDAL POSITION SENSOR
BRAKE SWITCH STUCK
ECM