P0123 – Throttle

DTC Description Possible Causes Diagnostic Aides
P0123 – Throttle
Position (TP) Circuit High Input
The TP sensor
circuit is monitored
by the PCM for a high TP rotation angle (or voltage) input through the comprehensive component monitor (CCM). If during key ON engine OFF or key ON engine running the TP rotation angle (or voltage) changes above maximum calibrated limit, the test fails.
 TP sensor not seated
properly
 TP circuit short to PWR
 VREF short to PWR
 SIG RTN circuit open to TP sensor
 Damaged TP sensor
 Damaged PCM
A TP PID (TP V PID) reading
greater than 93% (4.65 volts)
in key ON engine OFF, continuous memory or key ON engine running indicates a hard fault.
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