DTC P1121: TP Sensor Signal Lower Than Expected
- Turn the ignition switch ON (II).
- Check the throttle position with the HDS or a scan tool.
Is 12.9%, 0.6 V, or higher indicated when the throttle is fully opened?
YES: Intermittent failure, system is OK at this time.
NO: Replace the throttle body (the TP sensor is not available separately) (see THROTTLE BODY REMOVAL/INSTALLATION ).