DTC P0123-00: TP Sensor No. 1 Circuit High Input: Notes

DTC P0123:00	TP sensor No. 1 circuit high input
DETECTION CONDITION	If the PCM detects that the TP sensor No. 1 voltage at the PCM terminal 1BP is above 4.9 V , the PCM determines that the TP sensor No. 1 circuit has a malfunction. Diagnostic support note This is a continuous monitor (CCM). The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA/Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Restricts the upper limit of the engine speed.
POSSIBLE CAUSE	Throttle body connector or terminals malfunction PCM connector or terminals malfunction TP sensor No. 1 malfunction Short to power supply in wiring harness between throttle body terminal A and PCM terminal 1BP Open circuit in wiring harness between the following terminals: Throttle body terminal B-PCM terminal 1BS Throttle body terminal A-PCM terminal 1BP Throttle body terminal D-PCM terminal 1BQ PCM malfunction

CAUTION:

Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.