What does code P0112 mean?

Q: What does code P0112 mean?

Intake Air Temperature Circuit Low Input. P0112 means the engine computer has detected an intake air temperature (IAT) sensor signal voltage that is lower than the normal operating range, which the computer interprets as an unusually high intake air temperature. The IAT sensor is a thermistor whose resistance drops as temperature rises, so a low signal voltage points to either an extremely hot intake charge or a circuit problem pulling the voltage down.

DTC codes / P01xx · Fuel and air metering / P0112

P0112Intake Air Temperature Circuit Low Input

P0112 means the engine computer has detected an intake air temperature (IAT) sensor signal voltage that is lower than the normal operating range, which the computer interprets as an unusually high intake air temperature. The IAT sensor is a thermistor whose resistance drops as temperature rises, so a low signal voltage points to either an extremely hot intake charge or a circuit problem pulling the voltage down.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaFuel and air metering

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.