AutoCodes – Ford – P0186 1999 Ford F150

P0186 1999 Ford F150 Code - Engine 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 1999 Ford F150 indicates Engine 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,210

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0186 1999 Ford F150 Description

The fuel tank temperature sensor is used to detect the fuel temperature inside the fuel tank. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as the fuel temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

OBDII Code P0186 1999 Ford F150 - Engine Fuel Temperature Sensor B Circuit Range/Performance - AutoCodes.com — P0186 1999 Ford F150 Code - Engine Fuel Temperature Sensor B Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P0186 1999 Ford F150?

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 1999 Ford F150?

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 does this mean?

Code Tech Notes

Replace Fuel Temperature Sensor.
The comprehensive component monitor (CCM) monitors the EFT Temperature for acceptable operating temperature. If during testing voltage were to fall below or exceed a calibrated limit, a calibrated amount of time the test will fail.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0186 1999 Ford F150 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 1999 Ford F150 code?

Need more information on how to fix the P0186 1999 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0186 1999 Ford F150 code diagnosed by a professional: Find a repair shop in your area

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 P0186 1999 Ford F150 Code

1. What are the common symptoms of OBDII code P0186 on a 1999 Ford F150?

- Common symptoms include poor fuel economy, rough idling, engine hesitation, and illuminated check engine light.

2. What does the Engine Fuel Temperature Sensor B Circuit do in a 1999 Ford F150?

- The sensor measures the temperature of the fuel and provides data to the engine control module for fuel delivery optimization.

3. What are the possible causes of the P0186 code on a 1999 Ford F150?

- Causes may include a faulty fuel temperature sensor, wiring issues in the sensor circuit, or a problem with the engine control module.

4. How can I diagnose the P0186 trouble code on my 1999 Ford F150?

- Diagnose by inspecting the fuel temperature sensor and its wiring, checking for loose connections, and using a multimeter to test sensor functionality.

5. Can I drive my 1999 Ford F150 with the P0186 code?

- It is not recommended to drive with the P0186 code as it can lead to poor engine performance and potential damage if left unresolved.

6. How do I repair the Engine Fuel Temperature Sensor B Circuit Range/Performance issue on a 1999 Ford F150?

- Repair typically involves replacing the faulty fuel temperature sensor, repairing any damaged wiring, and clearing the trouble code with a diagnostic tool.

7. Are there any DIY tips for fixing the P0186 code on a 1999 Ford F150?

- DIY tips include ensuring proper sensor installation, securely connecting wiring harnesses, and following a repair manual for accurate procedures.

8. Can a bad fuel temperature sensor cause other problems in a 1999 Ford F150?

- Yes, a malfunctioning fuel temperature sensor can lead to incorrect fuel delivery, affecting engine performance, emissions, and overall drivability.

9. How much does it cost to fix the P0186 code on a 1999 Ford F150?

- The cost varies depending on the extent of the issue, but it typically ranges from $100 to $300 for parts and labor at a repair shop.

10. Will the check engine light reset on its own after fixing the P0186 code on a 1999 Ford F150?

- In most cases, the check engine light will reset on its own after the repair is completed and the vehicle undergoes a few drive cycles without detecting the issue.