P0110 Fault Code

Intake Air Temperature Circuit Malfunction

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

The P0110 fault code indicates a malfunction in the Intake Air Temperature (IAT) circuit. This sensor plays a crucial role in measuring the temperature of the air entering the engine, which is essential for the engine control module (ECM) to optimize fuel injection and ignition timing. If there is a malfunction in this circuit, the ECM may not receive accurate temperature readings, leading to suboptimal engine performance.

What are the symptoms of the P0110 code?

Symptoms associated with the P0110 code can vary but may include:

• Check Engine Light (CEL) illuminated on the dashboard
• Poor engine performance and reduced fuel efficiency
• Difficulty starting the engine or rough idling
• Increased emissions due to improper air-fuel mixture

What causes the P0110 code?

Common causes of the P0110 fault code include:

• Faulty Intake Air Temperature Sensor
• Open or shorted wiring in the IAT circuit
• Corroded connectors or loose electrical connections
• Issues with the engine control module (ECM)
• Contaminated sensor from oil or other substances

How to fix P0110?

To resolve the P0110 fault code, consider the following steps:

• Inspect the wiring and connectors of the IAT sensor for any signs of damage or corrosion.
• Test the Intake Air Temperature Sensor to ensure it is functioning correctly. If faulty, replace it.
• Clear the fault codes from the ECM and perform a road test to monitor if the issue reoccurs.
• If the problem persists, further investigate the ECM and related components.