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Engine-Codes – Ford – P1125 2002 Ford F150

P1125 2002 Ford F150 Code - Throttle Position Sensor Intermittent

Quick Answer

The P1125 diagnostic trouble code (DTC) for a 2002 Ford F150 indicates an intermittent issue with the throttle position sensor (TPS). Common causes include Worn or damaged throttle position sensor, Loose or corroded electrical connections, Faulty wiring harness. 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
P1125 2002 Ford F150 indicates Throttle Position Sensor Intermittent.
Common causes
Common causes include Worn or damaged throttle position sensor, Loose or corroded electrical connections, Faulty wiring harness.
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 14, 2024
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Code P1125 2002 Ford F150 Description

The P1125 diagnostic trouble code (DTC) for a 2002 Ford F150 indicates an intermittent issue with the throttle position sensor (TPS). The TPS is a crucial component of the vehicle's electronic throttle control system, responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM). This data is used by the ECM to adjust the air-fuel mixture and ignition timing for optimal engine performance.

OBDII Code P1125 2002 Ford F150 - Throttle Position Sensor Intermittent
P1125 2002 Ford F150 Code - Throttle Position Sensor Intermittent

Common Causes of P1125 2002 Ford F150

  1. Worn or damaged throttle position sensor
  2. Loose or corroded electrical connections
  3. Faulty wiring harness
  4. Issues with the throttle body
  5. ECM software glitches

Symptoms of P1125 2002 Ford F150

  1. Rough idling or stalling
  2. Hesitation or lack of response when accelerating
  3. Engine misfires
  4. Reduced fuel efficiency
  5. Limp mode activation

How to Fix P1125 2002 Ford F150

  1. Begin by diagnosing the issue using a scan tool to confirm the P1125 code and check the TPS readings.
  2. Inspect the TPS for any signs of wear or damage and replace if necessary.
  3. Check and clean electrical connections, ensuring they are secure and free of corrosion.
  4. Inspect the wiring harness for any damage or breaks and repair as needed.
  5. Clear the DTC and perform a test drive to confirm that the issue has been resolved.

Cost to Fix P1125 2002 Ford F150

The typical repair costs for addressing a P1125 code on a 2002 Ford F150 can range from $100 to $300, depending on the extent of the issue and the cost of parts. This estimate includes the cost of a new throttle position sensor, any necessary wiring repairs, and labor. It's important to note that specific diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

What does this mean?

Tech Notes for P1125 2002 Ford F150

The TP sensor circuit is monitored by the PCM for sudden TP rotation angle (or voltage) input change through the comprehensive component monitor (CCM). If during the last 80 warm-up cycles in key ON engine running the PCM detects a TP rotation angle (or voltage) changes beyond the minimum or maximum calibrated limit, a continuous diagnostic trouble code (DTC) is stored.

When is the Code Detected?

Engine Control Module (ECM) detected the Thottle Position (TP) sensor voltage extended above or below calibrated limits

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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 P1125 2002 Ford F150 Code

1. What are the common symptoms of OBDII code P1125 in a 2002 Ford F150 related to the throttle position sensor?

The common symptoms include intermittent loss of power, hesitation or jerking during acceleration, and potential stalling of the engine.

2. What are the possible causes of an intermittent throttle position sensor issue triggering OBDII code P1125 in a 2002 Ford F150?

Potential causes include a faulty throttle position sensor, damaged wiring or connectors, a dirty throttle body, or issues with the engine control module.

3. How can I diagnose the throttle position sensor issue causing OBDII code P1125 in my 2002 Ford F150?

You can use a scan tool to monitor the throttle position sensor readings, visually inspect the sensor and its wiring for damage, and perform a throttle body cleaning to eliminate potential issues.

4. Can I drive my 2002 Ford F150 with OBDII code P1125 related to the throttle position sensor issue?

It is not recommended to drive the vehicle with this code present, as it can lead to unsafe driving conditions and potential engine damage if left unresolved.

5. How can I repair the throttle position sensor intermittent issue triggering OBDII code P1125 in my 2002 Ford F150?

Depending on the exact cause, you may need to replace the throttle position sensor, repair damaged wiring or connectors, clean the throttle body, or reprogram the engine control module.

6. Will resetting the OBDII code P1125 in my 2002 Ford F150 temporarily resolve the throttle position sensor issue?

Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing the code is not addressed, the problem is likely to reoccur.

7. Is it possible to prevent OBDII code P1125 related to throttle position sensor issues in my 2002 Ford F150?

Regular maintenance, such as cleaning the throttle body and inspecting the sensor and its connections, can help prevent issues with the throttle position sensor triggering this code.

8. How much does it typically cost to repair OBDII code P1125 in a 2002 Ford F150 caused by a throttle position sensor problem?

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

9. Can a DIY enthusiast fix the throttle position sensor issue causing OBDII code P1125 in a 2002 Ford F150?

Depending on your skill level and access to tools, you may be able to replace the throttle position sensor or clean the throttle body yourself, but more complex issues may require professional assistance.

10. How urgent is it to address OBDII code P1125 related to the throttle position sensor in my 2002 Ford F150?

It is recommended to address this issue promptly to prevent potential safety hazards and further damage to the vehicle's engine.

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