P1239 Code - Throttle Position Sensor Circuit Range/Performance
Quick Answer
The P1239 diagnostic trouble code (DTC) indicates a problem with the Throttle Position Sensor (TPS) circuit, specifically related to its range or performance. Common causes include Faulty Throttle Position Sensor, Wiring or connector issues in the TPS circuit, Corrosion or contamination affecting sensor operation. 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 Throttle Position Sensor, Wiring or connector issues in the TPS circuit, Corrosion or contamination affecting sensor operation.
- 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 P1239 Description
The P1239 diagnostic trouble code (DTC) indicates a problem with the Throttle Position Sensor (TPS) circuit, specifically related to its range or performance. The TPS is a crucial component in the vehicle's electronic control system, as it monitors the position of the throttle and relays this information to the engine control unit (ECU). This data is essential for the ECU to calculate the correct air-fuel mixture and ignition timing for optimal engine performance.
Common Causes of P1239
- Faulty Throttle Position Sensor.
- Wiring or connector issues in the TPS circuit.
- Corrosion or contamination affecting sensor operation.
- ECU software or calibration problems.
- Mechanical issues with the throttle body.
Symptoms of P1239
- Poor acceleration or hesitation when pressing the gas pedal.
- Rough idling or stalling when at a stop.
- Difficulty maintaining a consistent speed.
- Check Engine Light illuminated on the dashboard.
- Limited or unresponsive throttle control.
How to Fix P1239
- Begin by diagnosing the specific cause of the issue using a scan tool to read the DTC and monitor TPS sensor data.
- Inspect the TPS wiring harness and connectors for any damage or corrosion, repairing or replacing as necessary.
- Test the TPS sensor for proper operation and replace it if it is found to be faulty.
- Perform a throttle body cleaning to ensure smooth operation and proper sensor readings.
- Clear the DTC and perform a test drive to verify that the issue has been resolved.
Cost to Fix P1239
The cost of repairing a Throttle Position Sensor circuit issue can vary depending on the specific cause of the problem and the vehicle make and model. In general, replacement TPS sensors can range from $50 to $200, with labor costs averaging between $100 to $200. Overall, the total repair cost for this issue may fall within the range of $150 to $400. However, it's recommended to obtain a detailed quote from a local auto repair shop to get a more accurate estimate based on individual circumstances. Labor rates can vary widely, so it's essential to consider these factors when budgeting for the repair.
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Code P1239 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
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.
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