AutoCodesFord – P0187 1997 Ford F150

P0187 1997 Ford F150 Code - Engine Fuel Temperature Sensor B Circuit Low Input

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
P0187 1997 Ford F150 indicates Engine Fuel Temperature Sensor B Circuit Low Input .
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.
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Code Popularity 1,988
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0187 1997 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 P0187 1997 Ford F150 - Engine Fuel Temperature Sensor B Circuit Low Input  - AutoCodes.com
P0187 1997 Ford F150 Code - Engine Fuel Temperature Sensor B Circuit Low Input

What are the Possible Causes of the DTC P0187 1997 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 P0187 1997 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0187 1997 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 P0187 1997 Ford F150 code?

Need more information on how to fix the P0187 1997 Ford F150 code? Get Access to Factory Service Manuals

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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 P0187 1997 Ford F150 Code

1. What does the OBDII code P0187 mean on a 1997 Ford F150?

P0187 indicates that the Engine Control Module (ECM) has detected a low input voltage issue in the Fuel Temperature Sensor B circuit.

2. What are the common symptoms of code P0187 on a 1997 Ford F150?

Symptoms may include poor fuel efficiency, rough idling, difficulty starting, reduced engine performance, and the Check Engine Light being illuminated.

3. What causes the P0187 code to appear on a 1997 Ford F150?

Common causes include a faulty fuel temperature sensor, damaged or corroded wiring, loose connections, or a malfunctioning ECM.

4. Can driving with the P0187 code cause further damage to my 1997 Ford F150?

While it may not immediately cause severe damage, ignoring the issue could lead to poor engine performance and potential long-term damage to fuel system components.

5. How do I diagnose the P0187 code on a 1997 Ford F150?

Start by inspecting the wiring and connectors for damage or corrosion, test the fuel temperature sensor with a multimeter, and use a scan tool to monitor sensor data.

6. How do I fix the P0187 code on a 1997 Ford F150?

Common fixes include replacing the faulty fuel temperature sensor, repairing damaged wiring, securing loose connectors, or replacing the ECM if necessary.

7. Where is the fuel temperature sensor located on a 1997 Ford F150?

The fuel temperature sensor is typically located on or near the fuel rail or within the fuel tank, depending on the vehicle's design.

8. How much does it cost to repair the P0187 code on a 1997 Ford F150?

Repair costs can vary, but replacing a fuel temperature sensor typically ranges from $50 to $200, while wiring repairs or ECM replacements may cost more.

9. Can a bad fuel temperature sensor cause other issues besides triggering code P0187?

Yes, a bad sensor can lead to incorrect fuel-air mixture adjustments, poor engine performance, and decreased fuel efficiency.

10. Do I need professional help to fix the P0187 code on my 1997 Ford F150?

If you’re experienced with automotive diagnostics and repairs, you can attempt to fix it yourself. Otherwise, it’s best to seek help from a professional mechanic.

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