DTC Troubleshooting: P2123 (20-4)
|DTC P2123:||Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Circuit High Voltage|
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information.
|1.||Clear the DTC with the HDS.|
|2.||Turn the ignition switch ON (II).|
|3.||Check whether the DTC P2123 is indicated in the DTCs/Freeze Data in PGM FI Mode Menu with the HDS.|
Is DTC P2123 indicated in the PGM FI system?
NO - Go to 4.
|4.||Check whether the DTC P2123 is indicated in the DTCs/Freeze Data in A/T Mode Menu with the HDS.|
Is DTC P2123 indicated?
YES - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.n
NO - Intermittent failure, the system is OK at this time.n