| DTC P0073:00 |
Ambient temperature sensor circuit high input |
| DETECTION CONDITION |
- The PCM monitors the input signal from the ambient temperature sensor. If the voltage from the ambient temperature sensor is above 4.88 V
, the PCM determines that the ambient temperature sensor circuit has a malfunction.
Diagnostic support note
- This is a continuous monitor (other).
- The check engine light does not illuminate.
- FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.
- DTC is stored in the PCM memory.
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| FAIL-SAFE FUNCTION |
Not applicable |
| POSSIBLE CAUSE |
- Ambient temperature sensor connector or terminals malfunction
- PCM connector or terminals malfunction
- Ambient temperature sensor malfunction
- Short to power supply in wiring harness between ambient temperature sensor terminal A and PCM terminal 2I
- Open circuit in wiring harness between the following terminals:
- Ambient temperature sensor terminal A-PCM terminal 2I
- Ambient temperature sensor terminal B-PCM terminal 2AJ
- PCM malfunction
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