DTC P0123: Throttle/Pedal Position Sensor A Circuit High
P0123 - THROTTLE/PEDAL POSITION SENSOR A CIRCUIT HIGH
| For Vehicles With Electronic Throttle Control (ETC) | |||
| Description: | The electronic throttle control (ETC) throttle position (TP) sensor 1 circuit was flagged as a concern by the powertrain control module (PCM) indicating a high voltage. | ||
| Possible Causes: |
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| Diagnostic Aids: | Drive the vehicle, bring it to a stop, and turn the key to the OFF position. Start the vehicle and carry out the key on engine running (KOER) self-test at idle. Access KOER DTCs on the diagnostic tool. The TP1 signal is normally at a high voltage at closed throttle, and a lower voltage at wide open throttle (opposite of TP2). | ||
| For All Others | |||
| Description: | The throttle position (TP) sensor circuit is monitored by the powertrain control module (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 the maximum calibrated limit, the test fails. | ||
| Possible Causes: |
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| Diagnostic Aids: | A TP PID (TP V PID) reading greater than 93% 4.65 volts in key ON, engine OFF or key ON, engine running indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles With Electronic Throttle Control (ETC) | GO to Pinpoint Test DV . | ||
| All others | GO to Pinpoint Test DH . | ||