DTC P2123: 00 App Sensor No. 1 Circuit High Input: Notes
DTC P2123:00 DETECTION CONDITION AND POSSIBLE CAUSES (SKYACTIV-G 2.0, SKYACTIV-G 2.5)
| DTC P2123:00 |
APP sensor No. 1 circuit high input |
| DETECTION CONDITION |
- The PCM monitors the input voltage from APP sensor No. 1. If the input voltage at the PCM terminal 2AN is above 4.9 V
, the PCM determines that the APP sensor No. 1 circuit input voltage is high.
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 (Mode 2)/Snapshot data is available.
- DTC is stored in the PCM memory.
|
| FAIL-SAFE FUNCTION |
- Regulates the upper limit of the APP sensor output.
|
| POSSIBLE CAUSE |
- APP sensor connector or terminals malfunction
- PCM connector or terminals malfunction
- APP sensor No. 1 malfunction
- Short to power supply in wiring harness between APP sensor terminal B and PCM terminal 2AN
- Open circuit in wiring harness between APP sensor terminal C and PCM terminal 2AO
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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CAUTION:
- Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.
RELATED PIDS
| Item (definition) |
Unit/Condition |
Definition |
Condition/Specification (Reference) |
| APP1 |
% |
APP sensor No. 1 |
- Accelerator pedal released: Approx. 15%
- Accelerator pedal depressed: Approx. 82%
|
| V |
- Accelerator pedal released: Approx. 0.75 V
- Accelerator pedal depressed: Approx. 4.1 V
|
| APP2 |
% |
APP sensor No. 2 |
- Accelerator pedal released: Approx. 7.45%
- Accelerator pedal depressed: Approx. 41%
|
| V |
- Accelerator pedal released: Approx. 0.38 V
- Accelerator pedal depressed: Approx. 2.05 V
|