Operation CHARM: Car repair manuals for everyone.

P1121

DTC P1121: TP Sensor Signal Lower Than Expected

1. Turn the ignition switch ON (II),
2. Check the throttle position with a scan tool or the HDS.

Is 12.1 % or higher indicated when the throttle is fully opened?

YES - Intermittent failure, system is OK at this time.

NO - Replace the throttle body.