AutoCodes – Ford – P0188 2003 Ford F150

P0188 2003 Ford F150 Code - Engine Fuel Temperature Sensor B Circuit High Input

Quick Answer

The comprehensive component monitor (CCM) monitors the Engine Fuel Temperature (EFT) Sensor circuit to the Powertrain Control Module (PCM) for low and high voltage. Common causes include Faulty Engine Fuel Temperature Sensor, Engine Fuel Temperature Sensor harness is open or shorted, Engine 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
P0188 2003 Ford F150 indicates Engine Fuel Temperature Sensor B Circuit High Input.
Common causes
Common causes include Faulty Engine Fuel Temperature Sensor, Engine Fuel Temperature Sensor harness is open or shorted, Engine 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,068
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 P0188 2003 Ford F150 Description

The comprehensive component monitor (CCM) monitors the Engine Fuel Temperature (EFT) Sensor circuit to the Powertrain Control Module (PCM) for low and high voltage. If voltage were to fall below or exceed a calibrated limit and amount of time during testing, the test will fail. Open or short in harness. Low ambient temperature operation.
OBDII Code P0188 2003 Ford F150 - Engine Fuel Temperature Sensor B Circuit High Input - AutoCodes.com
P0188 2003 Ford F150 Code - Engine Fuel Temperature Sensor B Circuit High Input

What are the Possible Causes of the DTC P0188 2003 Ford F150?

  • Faulty Engine Fuel Temperature Sensor
  • Engine Fuel Temperature Sensor harness is open or shorted
  • Engine Fuel Temperature Sensor circuit poor electrical connection

How to Fix the DTC P0188 2003 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 P0188 2003 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 P0188 2003 Ford F150 code?

Need more information on how to fix the P0188 2003 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P0188 2003 Ford F150 Code

1. What are common symptoms of OBDII code P0188 on a 2003 Ford F150?

The common symptoms of code P0188 include poor fuel economy, rough engine performance, and potential stalling or hesitation while driving.

2. What causes the OBDII code P0188 to trigger in a 2003 Ford F150?

The P0188 code in a 2003 Ford F150 is triggered when the Engine Fuel Temperature Sensor B circuit detects a high input signal, indicating a problem with the fuel temperature sensor or its circuit.

3. How serious is the OBDII code P0188 on a 2003 Ford F150?

While the P0188 code itself may not cause immediate harm to the vehicle, ignoring it can lead to poor fuel efficiency, engine problems, and potential damage over time if left unrepaired.

4. How can I diagnose the OBDII code P0188 on my 2003 Ford F150?

Diagnosing the P0188 code typically involves using an OBDII scanner to read the code, checking the fuel temperature sensor and its wiring for faults, and testing the sensor's resistance and voltage to determine if it's functioning correctly.

5. What are some DIY repair tips for fixing the OBDII code P0188 on a 2003 Ford F150?

DIY repair tips for resolving the P0188 code may include checking and cleaning the fuel temperature sensor connector, inspecting and repairing any damaged wiring, and replacing the sensor if necessary.

6. Can I still drive my 2003 Ford F150 with the OBDII code P0188 present?

It is not recommended to drive your Ford F150 with the P0188 code present, as it can lead to decreased fuel efficiency and potential engine issues. It's best to address the problem as soon as possible.

7. How much does it typically cost to repair the OBDII code P0188 on a 2003 Ford F150?

The cost of repairing the P0188 code on a 2003 Ford F150 can vary depending on the underlying issue, but it may range from $100 to $300 for parts and labor.

8. Will resetting the OBDII code P0188 on my 2003 Ford F150 make it go away permanently?

Resetting the P0188 code may temporarily clear the error code, but if the underlying issue with the fuel temperature sensor or its circuit is not addressed, the code is likely to reappear.

9. How long does it take to repair the OBDII code P0188 on a 2003 Ford F150?

The repair time for the P0188 code on a 2003 Ford F150 can vary depending on the exact cause of the issue, but it may take anywhere from 1 to 3 hours to diagnose and fix the problem.

10. Can a faulty Engine Fuel Temperature Sensor B circuit cause other issues in a 2003 Ford F150?

Yes, a faulty Engine Fuel Temperature Sensor B circuit can cause other issues in a 2003 Ford F150, such as poor engine performance, reduced fuel efficiency, and potential drivability problems.

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