The code indicates the engine control module is receiving a voltage from the oil temperature sensor that is higher than expected, suggesting a problem with the sensor circuit.
The sensor itself can fail and output a voltage that is consistently high, triggering the circuit high input code.
Damaged wiring, corrosion, or a short to voltage can cause an abnormally high signal on the sensor circuit.
If the oil overheats beyond design limits, the sensor may report a high voltage, though this is usually accompanied by other overheating symptoms.
A rare failure of the PCM's sensor input circuitry can misinterpret the sensor signal as high, but this is less common than sensor or wiring faults.
No. The PCM is rarely the cause; most often the issue is a faulty sensor, wiring, or connector.
It can cause the PCM to limit power or trigger an overheating warning, but the engine usually continues to run normally.
If the oil temperature gauge shows normal levels and no overheating symptoms are present, short‑term driving is generally safe, but the issue should be repaired promptly.
Low oil level can lead to overheating, which might cause the sensor to read high, but the code itself is triggered by an electrical fault rather than oil level directly.