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P0112

Overview

Code

P0112

Code Type

P

Code Class

P0

System

Engine

Severity Level

Low

Emissions Related

true

Drivability Impact

Minor

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0112 indicates that the intake air temperature sensor signal is lower than the expected value detected by the ECM

Symptoms

Check Engine Light illuminated; Poor fuel economy; Engine hesitation

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

Low IAT input may cause incorrect fuel delivery during engine operation

Possible Causes

Faulty IAT sensor; Short to ground in the circuit; Wiring issues

Diagnostic Steps

1 Confirm the fault code; 2 Inspect wiring for shorts; 3 Monitor live IAT readings; 4 Compare readings with ambient temperature; 5 Replace the IAT sensor if necessary

Drive Safety Notes

Driving is usually possible, but prolonged operation may affect fuel efficiency

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