DTC P0123 00: TP Sensor No. 1 Circuit High Input: Notes
DTC P0123:00 DETECTION CONDITIONS AND POSSIBLE CAUSES (SKYACTIV-G 2.0, SKYACTIV-G 2.5)
| 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 (Mode 2)/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 1 BP
- 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
|
 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) |
| TP1 |
V |
TP sensor No. 1 voltage |
- Accelerator pedal released: Approx. 1.11 V
- Accelerator pedal fully depressed: Approx. 4.59 V
|
| % |
Throttle valve position No. 1 |
- Accelerator pedal released: Approx. 22%
- Accelerator pedal fully depressed: Approx. 92%
|