P0113
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P0113
P0113
Description
IAT SENSOR CIRCUIT HIGH VOLTAGE
Intake Air Temperature (IAT) sensor is a thermistor that
varies resistance based on temperature. As temperature of sensor
increases, resistance decreases. Low temperature will result in a high
signal voltage. DTC will set when PCM sees an IAT sensor voltage of
greater than 5 volts.
Symptoms
SES Service Engine Soon light
Causes
Description
IAT SENSOR CIRCUIT HIGH VOLTAGE
Intake Air Temperature (IAT) sensor is a thermistor that
varies resistance based on temperature. As temperature of sensor
increases, resistance decreases. Low temperature will result in a high
signal voltage. DTC will set when PCM sees an IAT sensor voltage of
greater than 5 volts.
SES Service Engine Soon light
Causes
- Defective IAT sensor
- Loose or corroded connection at IAT sensor
- Open in IAT ground circuit or signal circuit
- Short to voltage in IAT signal circuit or reference circuit
- IAT harness and/or wiring routed too close to high-voltage wiring such as alternator, spark plug cables, etc.
- Inspect connection at IAT, clean if needed
- Test wires for short or open circut
- Check routing of wires and move away from high voltage wires
- Replace IAT sensor