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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 891 (Engine Control System (Diagnostic Codes & Symptom Tests)) >> DTC/Circuit Diagnosis >> DTC P0122, P0123: TP Sensor >> On Board Diagnosis Logic >> Notes

On Board Diagnosis Logic: Notes

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

These self-diagnoses have the one trip detection logic. 

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0122
0122
Throttle position sensor 2 circuit low input An excessively low voltage from the TP sensor 2 is sent to ECM.
  • Harness or connectors (TP sensor 2 circuit is open or shorted.) (APP sensor 2 circuit is shorted.)
  • Electric throttle control actuator (TP sensor 2)
  • Accelerator pedal position sensor (APP sensor 2)
P0123
0123
Throttle position sensor 2 circuit high input An excessively high voltage from the TP sensor 2 is sent to ECM.