DTC P0122-00: TP Sensor No.1 Circuit Low Input: Notes
DETECTION CONDITION AND POSSIBLE CAUSE
| DTC P0122:00 |
TP sensor No.1 circuit low input |
| DETECTION CONDITION |
- If the PCM detects that the TP sensor No.1 voltage at the PCM terminal 1BP is below 0.1 V
while the engine is running, 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.
- The 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
- Short to ground in wiring harness between the following terminals:
- Throttle body terminal B-PCM terminal 1BS
- Throttle body terminal A-PCM terminal 1BP
- PCM connector or terminals malfunction
- TP sensor No.1 signal circuit and ground circuit are shorted to each other
- Open circuit in wiring harness between throttle body terminal B and PCM terminal 1BS
- TP sensor No.1 malfunction
- PCM malfunction
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CAUTION:
- Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.
RELATED PIDS
| Monitor item (Definition) |
Unit/Condition |
Condition/Specification (Reference) |
| TP1 |
V |
- Accelerator pedal released: approx. 1.11 V
- Accelerator pedal depressed: approx. 4.59 V
|
| % |
- Accelerator pedal released: approx. 22 %
- Accelerator pedal depressed: approx. 92 %
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