AutoCodes – Infiniti – P1238 Infiniti

P1238 Infiniti Code - Electric Throttle Control Actuator

Quick Answer

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. Common causes include Faulty Electric Throttle Control Actuator, Throttle plate sticking due to carbon build-up, Electric Throttle Control Actuator 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
P1238 Infiniti indicates Electric Throttle Control Actuator.
Common causes
Common causes include Faulty Electric Throttle Control Actuator, Throttle plate sticking due to carbon build-up, Electric Throttle Control Actuator 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 10,711
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 20, 2019
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Code P1238 Infiniti Description

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle control motor is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve.
The throttle position sensor detects the throttle valve position, and feeds the voltage signal to the ECM. The ECM judges the current opening angle of the throttle valve and controls the throttle valve opening angle in response to driving conditions via the throttle control motor.
OBDII Code P1238 Infiniti - Electric Throttle Control Actuator - AutoCodes.com
P1238 Infiniti Code - Electric Throttle Control Actuator

What are the Possible Causes of the DTC P1238 Infiniti?

  • Faulty Electric Throttle Control Actuator
  • Throttle plate sticking due to carbon build-up
  • Electric Throttle Control Actuator harness is open or shorted
  • Electric Throttle Control Actuator poor electrical circuit connection

How to Fix the DTC P1238 Infiniti?

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 P1238 Infiniti 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.

Need more information about the P1238 Infiniti code?

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Need Help with the Code?

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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 P1238 Infiniti Code

1. What are the common symptoms of OBDII code P1238 in an Infiniti related to the Electric Throttle Control Actuator?

- Common symptoms may include rough idling, engine stalling, lack of power, and the vehicle going into "limp mode."

2. What are some possible causes of OBDII code P1238 in an Infiniti?

- Potential causes include a faulty electric throttle control actuator, wiring issues, throttle body problems, or a malfunctioning throttle position sensor.

3. How can I diagnose the Electric Throttle Control Actuator issue causing OBDII code P1238 in my Infiniti?

- A thorough diagnostic scan using an OBDII scanner can help pinpoint the issue, along with checking the wiring and connectors for any signs of damage or corrosion.

4. Can I drive my Infiniti with OBDII code P1238 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to unpredictable behavior and potentially unsafe driving conditions.

5. How can I repair OBDII code P1238 related to the Electric Throttle Control Actuator in my Infiniti?

- Repair may involve replacing the electric throttle control actuator, repairing or replacing damaged wiring, cleaning the throttle body, or recalibrating the throttle position sensor.

6. Is it possible to reset OBDII code P1238 in an Infiniti without addressing the underlying issue?

- While clearing the code may temporarily turn off the check engine light, it is crucial to address the root cause to prevent further damage to the vehicle.

7. Are there any preventive maintenance tips to avoid OBDII code P1238 in an Infiniti?

- Regularly inspecting and cleaning the throttle body, ensuring proper wiring connections, and following the manufacturer's maintenance schedule can help prevent this issue.

8. How much does it typically cost to repair OBDII code P1238 in an Infiniti at a mechanic or dealership?

- The cost can vary depending on the exact cause of the issue, but it may range from a couple of hundred dollars for simple repairs to over a thousand dollars for more complex problems.

9. Can a DIY enthusiast with some automotive knowledge fix OBDII code P1238 in an Infiniti themselves?

- Depending on the skill level and tools available, some DIY enthusiasts may be able to address this issue themselves by following repair guides or tutorials specific to their vehicle.

10. Will OBDII code P1238 cause permanent damage to the engine or other components if left unaddressed in an Infiniti?

- Ignoring this code can potentially lead to further damage to the engine or transmission over time, so it is essential to address the issue promptly.

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