AutoCodes – Generic – P1239

P1239 Code - Throttle Position Sensor Circuit Range/Performance

Quick Answer

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. Common causes include Faulty Electric Throttle Control Actuator (TP sensor 1 and 2), Electric Throttle Control Actuator harness is open or shorted, Electric Throttle Control Actuator circuit poor electrical connection. 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: P1239 indicates Throttle Position Sensor Circuit Range/Performance.
Common causes: Common causes include Faulty Electric Throttle Control Actuator (TP sensor 1 and 2), Electric Throttle Control Actuator harness is open or shorted, Electric Throttle Control Actuator circuit poor electrical connection.
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 33,363

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1239 Description

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.
The throttle position sensor has two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the Engine Control Module (ECM). In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

OBDII Code P1239 - Throttle Position Sensor Circuit Range/Performance - AutoCodes.com — P1239 Code - Throttle Position Sensor Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P1239?

Faulty Electric Throttle Control Actuator (TP sensor 1 and 2)
Electric Throttle Control Actuator harness is open or shorted
Electric Throttle Control Actuator circuit poor electrical connection

How to Fix the DTC P1239?

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 P1239 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 P1239 code?

Need more information on how to fix the P1239 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1239 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1239 Audi — Injector Circuit Open Cylinder 3
P1239 Buick — Fuel Injector 6 Control Circuit Shorted
P1239 Cadillac — Fuel Injector 6 Control Circuit Shorted
P1239 Chevrolet — Fuel Injector 6 Control Circuit Shorted
P1239 Chrysler — Engine Oil Temperature Too Low
P1239 Dodge — Engine Oil Temperature Too Low
P1239 Ford — Speed Fuel Pump Positive Feed Fault
P1239 GMC — Fuel Injector 6 Control Circuit Shorted
P1239 Infiniti — Throttle Position Sensor Circuit Range/Performance
P1239 Isuzu — High Fuel Pressure System Fault
P1239 Jeep — Engine Oil Temperature Too Low
P1239 Mazda — Speed Fuel Pump Positive Feed
P1239 Mitsubishi — Engine RPM Plausibility
P1239 Nissan — Throttle Position Sensor Circuit Range/Performance
P1239 RAM — Engine Oil Temperature Too Low
P1239 Volkswagen — Injector Circuit Open Cylinder 3

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 P1239 Code

1. What are the common symptoms of OBDII code P1239 related to the throttle position sensor circuit?

- Common symptoms include issues with acceleration, poor engine performance, stalling, and in some cases, the vehicle going into "limp mode."

2. What are the possible causes of OBDII code P1239 indicating throttle position sensor circuit range/performance issues?

- Potential causes may include a faulty throttle position sensor, wiring or connector issues, a vacuum leak, or a problem with the throttle body.

3. How can I diagnose the throttle position sensor circuit issue causing OBDII code P1239?

- Diagnosis typically involves using a scan tool to read the code, checking the throttle position sensor for proper voltage signals, inspecting wiring for damage, and ensuring the throttle body is functioning correctly.

4. Can a dirty throttle body cause OBDII code P1239 to trigger?

- Yes, a dirty throttle body can disrupt the proper functioning of the throttle position sensor and lead to code P1239. Regular maintenance, including cleaning the throttle body, can help prevent such issues.

5. Is it safe to continue driving with OBDII code P1239 related to the throttle position sensor?

- It is not recommended to drive for an extended period with this code active, as it can affect the vehicle's performance and potentially lead to further damage. It is best to address the issue promptly.

6. How can I reset OBDII code P1239 after repairing the throttle position sensor circuit problem?

- After fixing the underlying issue causing the code, you can reset the code using an OBDII scan tool or by disconnecting the vehicle's battery for a few minutes to clear the error code.

7. Can a DIY enthusiast repair OBDII code P1239 related to the throttle position sensor circuit?

- Depending on the underlying cause, DIY enthusiasts with automotive repair experience may be able to address the issue by replacing the throttle position sensor, checking wiring connections, or cleaning the throttle body.

8. Will fixing OBDII code P1239 improve fuel efficiency and engine performance?

- Yes, resolving the throttle position sensor circuit issue indicated by code P1239 can lead to improved fuel efficiency, smoother acceleration, and overall better engine performance.

9. How much does it typically cost to repair OBDII code P1239 involving the throttle position sensor circuit?

- The cost of repairs can vary depending on the cause of the issue, but it may range from around $100 to $300 for parts and labor, excluding any additional diagnostic fees.

10. Can extreme weather conditions affect the throttle position sensor and trigger OBDII code P1239?

- Yes, extreme weather conditions such as extreme heat or cold can impact the throttle position sensor's performance, potentially leading to issues that trigger code P1239.