P0186 Code - Fuel Temperature Sensor 'B' Circuit Range/Performance
Quick Answer
The P0186 code indicates that there is a malfunction in the Fuel Temperature Sensor 'B' Circuit, specifically relating to its range or performance. Common causes include Faulty Fuel Temperature Sensor, Wiring issues or corrosion in the sensor circuit, Poor electrical connection to the sensor. 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
- P0186 indicates Fuel Temperature Sensor 'B' Circuit Range/Performance.
- Common causes
- Common causes include Faulty Fuel Temperature Sensor, Wiring issues or corrosion in the sensor circuit, Poor electrical connection to the sensor.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0186 Description
The P0186 code indicates that there is a malfunction in the Fuel Temperature Sensor 'B' Circuit, specifically relating to its range or performance. The Fuel Temperature Sensor is responsible for measuring the temperature of the fuel in the fuel tank. This information is crucial for the engine control module to adjust the air-fuel mixture accurately for optimal combustion. When the sensor circuit is not functioning correctly, it can lead to issues with fuel delivery and engine performance.
Common Causes of P0186
- Faulty Fuel Temperature Sensor
- Wiring issues or corrosion in the sensor circuit
- Poor electrical connection to the sensor
- Issues with the engine control module
- Fuel contamination affecting sensor readings
Symptoms of P0186
- Decreased fuel efficiency
- Engine running rough or hesitating
- Difficulty starting the engine
- Vehicle going into limp mode
- Check Engine Light illuminated
How to Fix P0186
- Diagnose the code using a scan tool to confirm the issue with the Fuel Temperature Sensor 'B' Circuit.
- Inspect the sensor, wiring, and connections for any visible damage or corrosion.
- Test the sensor's resistance and voltage to determine if it is functioning within specifications.
- Replace the Fuel Temperature Sensor if it is found to be faulty.
- Clear the code and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0186
The cost of repairing a Fuel Temperature Sensor 'B' Circuit Range/Performance issue can vary depending on the make and model of the vehicle, the location of the repair shop, and the labor rates. Typically, the cost of replacing the sensor and addressing any wiring or connection issues can range from $150 to $300 for parts and labor. It's recommended to consult with a trusted auto repair shop for a more accurate estimate based on your specific vehicle.
Need more information about the P0186 code?
Need more information on how to fix the P0186 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0186 code diagnosed by a professional: Find a repair shop in your area
Code P0186 Information for Specific Makes
- P0186 Ford — Engine Fuel Temperature Sensor 'B' Circuit Range/ Performance
- P0186 Mercedes-Benz — Fuel Temperature Sensor 'B' Circuit Range/Performance
Frequently Asked Questions about P0186 Code
1. What are the common symptoms of OBDII code P0186?
The common symptoms of OBDII code P0186 include poor fuel economy, rough engine performance, and the illumination of the check engine light.
2. What does the Fuel Temperature Sensor 'B' Circuit Range/Performance error code P0186 mean?
OBDII code P0186 indicates that the fuel temperature sensor 'B' circuit is experiencing a range/performance issue, potentially leading to inaccurate fuel temperature readings.
3. What are some possible causes of OBDII code P0186?
Possible causes of OBDII code P0186 include a faulty fuel temperature sensor, wiring issues in the sensor circuit, a defective engine control module (ECM), or a problem with the sensor connector.
4. How can I diagnose the Fuel Temperature Sensor 'B' Circuit Range/Performance error code P0186?
Diagnosing OBDII code P0186 involves checking the fuel temperature sensor for proper operation, inspecting the sensor wiring for damage or corrosion, and using a scan tool to monitor sensor data for abnormalities.
5. Can I continue driving with OBDII code P0186 present?
It is not recommended to continue driving with OBDII code P0186 present, as it can lead to decreased fuel efficiency and potential engine performance issues. It is best to address the underlying problem promptly.
6. How do I repair OBDII code P0186?
Repairing OBDII code P0186 typically involves replacing the faulty fuel temperature sensor, repairing any damaged wiring or connectors, and clearing the error code with a scan tool.
7. Are there any DIY tips for fixing OBDII code P0186?
While diagnosing and repairing OBDII code P0186 may require some technical knowledge, DIY enthusiasts can attempt to replace the fuel temperature sensor and check for any obvious wiring issues before seeking professional help.
8. Can a faulty fuel temperature sensor cause other issues in the vehicle?
Yes, a faulty fuel temperature sensor can cause issues such as inaccurate fuel readings, which may lead to poor engine performance, reduced fuel efficiency, and potential damage to the engine over time.
9. How much does it cost to fix OBDII code P0186 at a repair shop?
The cost of fixing OBDII code P0186 at a repair shop can vary depending on the labor rates and parts required. Typically, the repair cost may range from $100 to $300, including parts and labor.
10. Is OBDII code P0186 a common issue in specific vehicle makes and models?
OBDII code P0186 can occur in various vehicle makes and models, especially in vehicles equipped with a fuel temperature sensor. It is always recommended to consult the vehicle's service manual for specific information related to this error code.
Discuss the causes and fixes for P0186 OBDII Code
Code P0186 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.