P0186 Code - Fuel Temperature Sensor 'B' Circuit Range/Performance
Quick Answer
The fuel tank temperature sensor is used to detect the fuel temperature inside the fuel tank. Common causes include Faulty Fuel Temperature Sensor, Fuel Temperature Sensor harness is open or shorted, Fuel Temperature Sensor 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
- P0186 indicates Fuel Temperature Sensor 'B' Circuit Range/Performance.
- Common causes
- Common causes include Faulty Fuel Temperature Sensor, Fuel Temperature Sensor harness is open or shorted, Fuel Temperature Sensor 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.
Code P0186 Description
What are the Possible Causes of the DTC P0186?
- Faulty Fuel Temperature Sensor
- Fuel Temperature Sensor harness is open or shorted
- Fuel Temperature Sensor circuit poor electrical connection
How to Fix the DTC P0186?
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 P0186 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 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
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.
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