P0113 Lexus Code - Intake Air Temperature Circuit High Input
Quick Answer
The Intake Air Temperature (IAT), mounted on the Mass Air Flow meter sub-assembly, monitors the intake air temperature. Common causes include Dirty air filter, Faulty Intake Air Temperature (IAT) Sensor (Part of the Mass Air Flow [MAF] 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
- P0113 Lexus indicates Intake Air Temperature Circuit High Input.
- Common causes
- Common causes include Dirty air filter, Faulty Intake Air Temperature (IAT) Sensor (Part of the Mass Air Flow [MAF] 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.
Code P0113 Lexus Description
The ECM monitors the sensor voltage and uses this value to calculate the intake air temperature. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the intake air temperature sensor circuit and stores a Diagnostic Trouble Code (DTC).
What are the Possible Causes of the DTC P0113 Lexus?
- Dirty air filter
- Faulty Intake Air Temperature (IAT) Sensor (Part of the Mass Air Flow [MAF] Sensor)
- Intake Air Temperature sensor harness is open or shorted
- Intake Air Temperature sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0113 Lexus?
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 P0113 Lexus 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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Frequently Asked Questions about P0113 Lexus Code
1. What does the OBDII code P0113 mean on a Lexus?
P0113 indicates that the Intake Air Temperature (IAT) sensor is reporting a voltage signal that is too high, which typically means the sensor is detecting an abnormally low air temperature.
2. What are the common symptoms of code P0113 in a Lexus?
Symptoms may include poor engine performance, rough idling, reduced fuel economy, difficulty starting, or an illuminated Check Engine Light.
3. What causes the P0113 code in a Lexus?
Common causes include a faulty IAT sensor, damaged wiring or connectors, a short circuit, or an open circuit in the IAT sensor circuit.
4. Can a dirty air filter trigger a P0113 code in a Lexus?
A dirty air filter is unlikely to trigger P0113 directly, but it can affect overall engine performance. The code is more directly linked to the IAT sensor or its electrical components.
5. How do I fix the P0113 code on my Lexus?
To fix P0113, check and clean the IAT sensor, inspect and repair any damaged wiring or connectors, and replace the sensor if it’s faulty.
6. Can I drive my Lexus with a P0113 code active?
Driving with a P0113 code is possible but not recommended, as it can lead to poor engine performance, reduced fuel efficiency, and potential long-term damage.
7. Where is the Intake Air Temperature (IAT) sensor located in a Lexus?
The IAT sensor is typically located in the air intake system, near or integrated into the air filter housing or intake manifold.
8. How much does it cost to repair a P0113 code on a Lexus?
Repair costs can vary. Replacing an IAT sensor typically costs between $50 and $200, including parts and labor, depending on the model and location.
9. Can a faulty mass airflow (MAF) sensor cause a P0113 code in a Lexus?
While the MAF sensor and IAT sensor are separate components, a malfunctioning MAF sensor could indirectly affect the intake air readings. It’s best to diagnose the IAT circuit first.
10. How can I prevent a P0113 code from occurring in my Lexus?
Regularly inspect and clean the air intake system, ensure the IAT sensor and its wiring are in good condition, and replace air filters as recommended by the manufacturer.
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