Engine-CodesFord – P1125 1998 Ford F150

P1125 1998 Ford F150 Code - Throttle Position Sensor Intermittent

Quick Answer

The P1125 diagnostic trouble code (DTC) in a 1998 Ford F150 specifically refers to an issue with the Throttle Position Sensor (TPS) that is intermittent. Common causes include Worn out TPS, Damaged or corroded wiring harness, Loose electrical 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
P1125 1998 Ford F150 indicates Throttle Position Sensor Intermittent.
Common causes
Common causes include Worn out TPS, Damaged or corroded wiring harness, Loose electrical 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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P1125 1998 Ford F150 Description

The P1125 diagnostic trouble code (DTC) in a 1998 Ford F150 specifically refers to an issue with the Throttle Position Sensor (TPS) that is intermittent. The TPS is a crucial component of the vehicle's fuel management system, as it communicates the position of the throttle to the engine control unit (ECU). This information is used by the ECU to adjust the air-fuel mixture for optimal performance and efficiency. When the TPS is intermittent, it means that the sensor is not providing consistent or accurate readings to the ECU. This can result in a variety of performance issues, such as rough idling, stalling, poor acceleration, and reduced fuel efficiency.

OBDII Code P1125 1998 Ford F150 - Throttle Position Sensor Intermittent
P1125 1998 Ford F150 Code - Throttle Position Sensor Intermittent

Common Causes of P1125 1998 Ford F150

  1. Worn out TPS
  2. Damaged or corroded wiring harness
  3. Loose electrical connections
  4. Faulty ECU
  5. Environmental factors (moisture, heat, etc.)

Symptoms of P1125 1998 Ford F150

  1. Rough idling
  2. Stalling
  3. Poor acceleration
  4. Reduced fuel efficiency
  5. Engine misfires

How to Fix P1125 1998 Ford F150

  1. Consult a service manual or online resources to locate the TPS on the vehicle.
  2. Inspect the TPS and wiring harness for any visible damage or wear.
  3. Test the TPS using a multimeter to check for consistent readings.
  4. Replace the TPS if it is found to be faulty.
  5. Repair or replace any damaged wiring harness or connectors.

Cost to Fix P1125 1998 Ford F150

The typical repair costs for a Throttle Position Sensor replacement in a 1998 Ford F150 can range from $100 to $300, including parts and labor. However, specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate.

Tech Notes for P1125 1998 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 1998 Ford F150 Code

1. What are the common symptoms of OBDII code P1125 in a 1998 Ford F150 related to the throttle position sensor?

The common symptoms include intermittent loss of power, poor acceleration, stalling, rough idling, and potential difficulty shifting gears.

2. What are the possible causes of OBDII code P1125 in a 1998 Ford F150?

The code P1125 in a 1998 Ford F150 is typically triggered by a faulty throttle position sensor (TPS), loose or damaged wiring connections, or a corroded sensor connection.

3. How can I diagnose the cause of OBDII code P1125 in my 1998 Ford F150?

You can use an OBDII scanner to read the code, visually inspect the TPS and its wiring for any visible damage, and perform a voltage test on the sensor to determine if it is functioning correctly.

4. Can I drive my 1998 Ford F150 with OBDII code P1125?

It is not recommended to drive the vehicle with an intermittent throttle position sensor issue as it can lead to unsafe driving conditions and potential damage to the engine.

5. How can I repair OBDII code P1125 in my 1998 Ford F150 related to the throttle position sensor?

You can start by replacing the throttle position sensor, checking and repairing any damaged wiring connections, and clearing the error code using an OBDII scanner.

6. Are there any tips to prevent OBDII code P1125 from occurring in my 1998 Ford F150 in the future?

Regularly inspect and maintain the throttle position sensor, ensure proper wiring connections, and avoid driving aggressively to reduce the likelihood of triggering the code.

7. How much does it cost to repair OBDII code P1125 related to the throttle position sensor in a 1998 Ford F150?

The cost of repairing OBDII code P1125 can vary depending on the labor rates in your area, but typically, the replacement of a throttle position sensor and any necessary wiring repairs can range from $100 to $300.

8. Can a DIY enthusiast fix OBDII code P1125 in a 1998 Ford F150 themselves?

Yes, replacing the throttle position sensor and checking wiring connections can be done by a DIY enthusiast with basic mechanical skills and tools, saving on labor costs.

9. Will resetting the error codes clear OBDII code P1125 in my 1998 Ford F150?

Resetting the error codes may temporarily clear the code, but if the underlying issue with the throttle position sensor is not resolved, the code is likely to reappear.

10. Is it safe to ignore OBDII code P1125 in my 1998 Ford F150 if the symptoms are not severe?

Ignoring OBDII code P1125 can lead to decreased fuel efficiency, drivability issues, and potential damage to the engine over time, so it is not recommended to ignore the code.

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