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TuningBot DTC Database · v4.37.15

P2123 Accelerator pedal position (APP) / Throttle position (TP) sensor/switch D - high input

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainEngineOBD2

What P2123 means

P2123
Accelerator pedal position (APP) / Throttle position (TP) sensor/switch D - high input Generic · engine Data confidence 78%

The control module detected that the Accelerator pedal position (APP) / Throttle position (TP) sensor/switch D signal stayed above the expected range.

Possible causes

  • Wiring short to positive
  • APP / TP sensor/switch

Related and nearby codes

How to read P2123

P

Powertrain: engine, transmission and driveline systems.

2

Generic SAE-standard code: same meaning on every make.

123

Specific fault index within the subsystem.

Frequently asked questions about P2123

What does P2123 mean?

Accelerator pedal position (APP) / Throttle position (TP) sensor/switch D - high input. The control module detected that the Accelerator pedal position (APP) / Throttle position (TP) sensor/switch D signal stayed above the expected range.

Is P2123 generic or manufacturer-specific?

P2123 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P2123 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

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