P0112 Fault Code

Intake Air Temperature Circuit Low Input

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0112 code indicates that the Engine Control Module (ECM) has detected a low input signal from the intake air temperature (IAT) sensor. This sensor is crucial for measuring the temperature of the air entering the engine, allowing the ECM to optimize the air-fuel mixture for efficient combustion. A malfunctioning sensor can disrupt engine performance.

What are the symptoms of the P0112 code?

• Check engine light illuminated.
• Decreased engine performance or efficiency.
• Rough idle or stalling.
• Poor acceleration.

What causes the P0112 code?

• Faulty intake air temperature sensor.
• Poor electrical connection or damaged wiring.
• Short circuit in the sensor circuit.
• ECM malfunction or software issue.

How to fix P0112?

• Inspect the intake air temperature sensor and its wiring.
• Replace the IAT sensor if found defective.
• Repair any damaged wiring or connections.
• Clear the error codes and test drive the vehicle to ensure the issue is resolved.