AutoCodes – Generic – P0110

P0110 Code - Intake Air Temperature Circuit Malfunction

Quick Answer

This Diagnostic Trouble Code (DTC) is stored in the Engine Control Module (ECM) when the output from the Intake Air Temperature (IAT) sensor is not as expected or missing. Common causes include Dirty air filter, Faulty Intake Air Temperature (IAT) sensor, Intake Air Temperature sensor harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0110 indicates Intake Air Temperature Circuit Malfunction.
Common causes: Common causes include Dirty air filter, Faulty Intake Air Temperature (IAT) sensor, Intake Air Temperature sensor harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 99,864

How popular is this code, among other codes? Medium

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 20, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0110 Description

This Diagnostic Trouble Code (DTC) is stored in the Engine Control Module (ECM) when the output from the Intake Air Temperature (IAT) sensor is not as expected or missing. The ECM uses information from the engine coolant temperature sensor and engine oil temperature sensor to carry out a plausibility check on the signal. The IAT sensors are normally negative temperature coefficient thermistors. The signal voltage drops as the intake air temperature increases. The intake air temperature sensor can be integrated into the Mass Air Flow (MAF) sensor, manifold absolute pressure sensor, or as a separate component. The signal from the sensor is used to adjust the ignition system dwell period (on a spark-ignition engine) and to measure the density of the intake air. This is important when used with a forced induction system, as the temperature of the air can increase after it has increased in pressure. The signal can also be used to calculate the desired output from the alternator when a smart charging system is used. The system can calculate the approximate temperature of the battery from this data.

OBDII Code P0110 - Intake Air Temperature Circuit Malfunction - AutoCodes.com — P0110 Code - Intake Air Temperature Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0110?

Dirty air filter
Faulty Intake Air Temperature (IAT) sensor
Intake Air Temperature sensor harness is open or shorted
Intake Air Temperature sensor circuit poor electrical connection

How to Fix the DTC P0110?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0110 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Information for Specific Makes

P0110 BMW — Intake Air Temperature Circuit Malfunction
P0110 Hyundai — Intake Air Temperature Sensor 1 Circuit
P0110 Infiniti — Intake Air Temperature Sensor Signal Range/Performance
P0110 KIA — Intake Air Temperature Sensor 1 Circuit
P0110 Lexus — Intake Air Temperature Circuit Malfunction
P0110 Mazda — Intake Air Temperature Signal Out of Range
P0110 Mercedes-Benz — Intake Air Temperature Circuit Malfunction
P0110 MINI — Intake Air Temperature Circuit Malfunction
P0110 Mitsubishi — Intake Air Temperature Circuit Malfunction
P0110 Nissan — Intake Air Temperature Sensor Signal Range/Performance
P0110 Scion — Intake Air Temperature Circuit Malfunction
P0110 Toyota — Intake Air Temperature Circuit Malfunction

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0110 Code

1. What are the common symptoms of OBDII code P0110 (Intake Air Temperature Circuit Malfunction)?

- Common symptoms include poor engine performance, rough idling, stalling, and decreased fuel efficiency.

2. What are the possible causes of OBDII code P0110?

- The code P0110 can be caused by a faulty intake air temperature (IAT) sensor, damaged wiring or connectors, or issues with the engine control module (ECM).

3. How do I diagnose the OBDII code P0110?

- To diagnose code P0110, you can use a scan tool to read the code, check the IAT sensor's resistance, inspect the wiring for damage, and verify the sensor's connection to the ECM.

4. Can a dirty air filter trigger the OBDII code P0110?

- Yes, a dirty air filter can affect the IAT sensor readings and potentially trigger code P0110. Make sure to check and replace the air filter if necessary.

5. What is the best way to repair OBDII code P0110?

- The best way to repair code P0110 is to replace the faulty IAT sensor, repair any damaged wiring or connectors, and clear the code using a scan tool.

6. Can driving with OBDII code P0110 cause further damage to the vehicle?

- Driving with code P0110 may lead to reduced engine performance and fuel efficiency. It is recommended to address the issue promptly to prevent potential long-term damage.

7. Is it safe to continue driving with the check engine light illuminated due to code P0110?

- While it may be safe to drive short distances with code P0110, prolonged driving with the issue unresolved can lead to engine performance problems. It is best to address the problem as soon as possible.

8. Will disconnecting the battery reset the OBDII code P0110?

- Disconnecting the battery may temporarily clear the code, but it is not a permanent solution. The underlying issue causing code P0110 should be diagnosed and repaired.

9. Can extreme weather conditions trigger OBDII code P0110?

- Extreme weather conditions, such as high temperatures, can affect the IAT sensor readings and potentially trigger code P0110. Ensure the sensor and its connections are not compromised by weather exposure.

10. How often should the intake air temperature sensor be replaced to prevent OBDII code P0110 from reoccurring?

- The intake air temperature sensor should be replaced as part of regular maintenance or when symptoms of a malfunction arise. Replacing the sensor at recommended intervals can help prevent code P0110 from reoccurring.