P0110: Intake air temperature sensor circuit fault

What P0110 means

The intake air temperature (IAT) sensor tells the ECU how warm the incoming air is, because colder air is denser and needs more fuel. It is often built into the air flow sensor or the MAP sensor. This code points to a general fault in its circuit; if the car has more than one, it refers to the first.

Most common causes

• Loose or corroded connector on the sensor (or on the air flow sensor if built in)
• Broken or chafed sensor wire
• A faulty sensor
• A poor earth or problem with the ECU reference supply

Symptoms

• Engine warning light on
• Slightly harder starting, especially from cold
• Slight loss of power or higher consumption
• Often few noticeable symptoms

Can you drive with P0110?

Yes, no rush The ECU uses a backup value and the engine usually runs almost normally. You can keep driving and fix it when convenient, although fuel use may rise a little.

How to check it

With the engine cold after standing overnight, intake air temperature in live data should be close to the outside temperature. A fixed, absurd value, such as far below zero or above 100 degrees, points to wiring or the sensor.

How to read and clear P0110 with Final OBD

Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P0110 with this same explanation and whether it’s confirmed, pending or permanent.

With Free you read this code with its short description for nothing, and clear it if the engine stores it over standard OBD. With Pro you get the full explanation, how the car was running when it was logged (revs, temperature, load) and clearing in every control unit.

Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before the ITV. It’s all in how to read and clear fault codes and in the ITV and OBD.

Similar codes

• P0106 Manifold absolute pressure (MAP) sensor range or performance
• P0107 Manifold absolute pressure (MAP) sensor circuit low
• P0108 Manifold absolute pressure (MAP) sensor circuit high
• P0109 Manifold absolute pressure (MAP) sensor circuit intermittent
• P0111 Intake air temperature sensor range or performance
• P0112 Intake air temperature sensor circuit low
• P0113 Intake air temperature sensor circuit high
• P0114 Intake air temperature sensor circuit intermittent
• P0100 Mass or volume air flow sensor circuit fault
• P0101 Air flow sensor range or performance problem
• P0102 Air flow sensor circuit low input
• P0103 Air flow sensor circuit high input

P0110 is a generic code, so it means the same on any make, for example on Abarth, Cupra, Jeep, Mini, Nissan, Seat. See what Final OBD does on your car in makes and models.