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P0187 2002 Ford F150 Code - Engine Fuel Temperature Sensor B Circuit Low Input

Quick Answer

The P0187 diagnostic trouble code (DTC) for a 2002 Ford F150 indicates a problem with the Engine Fuel Temperature Sensor B Circuit, specifically a low input signal. Common causes include Faulty Engine Fuel Temperature Sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connections. 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 2002 Ford F150 indicates Engine Fuel Temperature Sensor B Circuit Low Input .
Common causes
Common causes include Faulty Engine Fuel Temperature Sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connections.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P0187 2002 Ford F150 Description

The P0187 diagnostic trouble code (DTC) for a 2002 Ford F150 indicates a problem with the Engine Fuel Temperature Sensor B Circuit, specifically a low input signal. The Engine Fuel Temperature Sensor is responsible for monitoring the temperature of the fuel in the fuel tank. This information is crucial for the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. When the ECM detects a low input signal from the sensor, it means that the fuel temperature is lower than expected, which can lead to various performance issues.

OBDII Code P0187 2002 Ford F150 - Engine Fuel Temperature Sensor B Circuit Low Input
P0187 2002 Ford F150 Code - Engine Fuel Temperature Sensor B Circuit Low Input

Common Causes of P0187 2002 Ford F150

  1. Faulty Engine Fuel Temperature Sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Corrosion or contamination in the sensor connections
  4. ECM software or hardware issues
  5. Fuel temperature sensor circuit shorted to ground

Symptoms of P0187 2002 Ford F150

  1. Rough idling
  2. Poor fuel efficiency
  3. Hesitation or stalling during acceleration
  4. Engine misfires
  5. Check engine light illuminated on the dashboard

How to Fix P0187 2002 Ford F150

  1. Begin by using a scan tool to verify the P0187 code and check for any additional related codes.
  2. Inspect the wiring and connectors in the Engine Fuel Temperature Sensor circuit for any damage, corrosion, or contamination. Repair or replace as necessary.
  3. Test the Engine Fuel Temperature Sensor using a multimeter to ensure it is functioning correctly. Replace the sensor if it is faulty.
  4. Clear the DTCs from the ECM memory using the scan tool and test drive the vehicle to verify that the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to identify any underlying issues with the ECM or other related components.

Cost to Fix P0187 2002 Ford F150

The typical repair costs for addressing a P0187 code on a 2002 Ford F150 can vary depending on the specific cause of the issue. In general, the cost of replacing a faulty Engine Fuel Temperature Sensor can range from $50 to $150, while the labor cost for the repair may be around $100 to $200. However, additional costs may apply if there are other underlying issues that need to be addressed. It's advisable to consult with a professional mechanic or auto repair shop to get an accurate estimate based on the specific circumstances of your vehicle. Keep in mind that labor rates can vary based on location, vehicle make and model, and the expertise of the technician.

What does this mean?

Tech Notes for P0187 2002 Ford F150

Replace Fuel Temperature Sensor.

The comprehensive component monitor (CCM) monitors the EFT sensor circuit to the PCM for low voltage. If voltage were to fall below a calibrated limit and amount of time during testing, the test will fail.

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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 2002 Ford F150 Code

1. What are common symptoms of OBDII code P0187 in a 2002 Ford F150?

- Common symptoms include poor fuel economy, rough idling, engine stalling, and difficulty starting the vehicle.

2. What does the OBDII code P0187 in a 2002 Ford F150 indicate?

- This code indicates a low input signal from the engine fuel temperature sensor B circuit.

3. What are the possible causes of OBDII code P0187 in a 2002 Ford F150?

- Possible causes include a faulty fuel temperature sensor, wiring issues, a poor electrical connection, or a problem with the engine control module.

4. How can I diagnose the issue causing OBDII code P0187 in my 2002 Ford F150?

- To diagnose the issue, you can use a scan tool to check for any additional trouble codes, inspect the wiring and connections related to the fuel temperature sensor, and test the sensor's resistance.

5. Can I continue driving my 2002 Ford F150 with OBDII code P0187?

- It is not recommended to continue driving with this code as it can lead to poor engine performance and potential further damage.

6. How can I repair OBDII code P0187 in my 2002 Ford F150?

- Repair options include replacing the fuel temperature sensor, repairing any damaged wiring, ensuring proper electrical connections, and clearing the trouble code with a scan tool.

7. Should I reset the OBDII code P0187 in my 2002 Ford F150 after making repairs?

- Yes, after making the necessary repairs, it is recommended to clear the trouble code with a scan tool to reset the system and see if the issue has been resolved.

8. How much does it typically cost to repair OBDII code P0187 in a 2002 Ford F150?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Can a DIY enthusiast fix OBDII code P0187 in a 2002 Ford F150?

- Depending on your level of automotive knowledge and experience, you may be able to replace the fuel temperature sensor or inspect the wiring yourself. However, it is recommended to consult a professional if unsure.

10. Is OBDII code P0187 a serious issue in a 2002 Ford F150?

- While it may not cause immediate harm to the vehicle, ignoring this code can lead to decreased fuel efficiency and potential engine performance issues, so it is best to address it promptly.

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