AutoCodes – Ford – P0123 2001 Ford F150

P0123 2001 Ford F150 Code - Throttle Position Circuit High Input

Quick Answer

The Throttle Position Sensor (TPS) responds to the accelerator pedal movement. Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position 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: P0123 2001 Ford F150 indicates Throttle Position Circuit High Input .
Common causes: Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position 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 4,580

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0123 2001 Ford F150 Description

The Throttle Position Sensor (TPS) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module (ECM). In addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the ECM.
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.

OBDII Code P0123 2001 Ford F150 - Throttle Position Circuit High Input - AutoCodes.com — P0123 2001 Ford F150 Code - Throttle Position Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0123 2001 Ford F150?

Faulty throttle position sensor
Throttle position sensor harness is open or shorted
Throttle position sensor circuit poor electrical connection

How to Fix the DTC P0123 2001 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.

What does this mean?

Code Tech Notes

The TP sensor circuit is monitored by the PCM for a high TP rotation angle (or voltage) input through the comprehensive component monitor (CCM). If during key ON engine OFF or key ON engine running the TP rotation angle (or voltage) changes above maximum calibrated limit, the test fails.
A TP PID (TP V PID) reading greater than 93% (4.65 volts) in key ON engine OFF, continuous memory or key ON engine running indicates a hard fault.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0123 2001 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.

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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 P0123 2001 Ford F150 Code

1. What are the common symptoms of OBDII code P0123 in a 2001 Ford F150?

- Common symptoms include issues with engine acceleration, rough idling, poor fuel efficiency, and potential stalling.

2. What does the OBDII code P0123 indicate in a 2001 Ford F150?

- The code P0123 indicates a Throttle Position Circuit High Input error, meaning the throttle position sensor is reporting a higher than normal voltage.

3. What are the possible causes of OBDII code P0123 in a 2001 Ford F150?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors in the throttle position circuit, or a malfunctioning Engine Control Module (ECM).

4. How can I diagnose the OBDII code P0123 in a 2001 Ford F150?

- Diagnosing the code involves using an OBDII scanner to read the code, checking the throttle position sensor's voltage output, inspecting wiring for damage, and testing the ECM.

5. Can I still drive my 2001 Ford F150 with OBDII code P0123?

- It is not recommended to drive the vehicle with this code as it can lead to poor performance and potential safety issues. It's best to address the problem promptly.

6. How can I repair OBDII code P0123 in a 2001 Ford F150?

- Repair methods may include replacing the throttle position sensor, repairing or replacing damaged wiring, or reprogramming the ECM if necessary.

7. Is it safe to reset the OBDII code P0123 in a 2001 Ford F150 using a scanner?

- While resetting the code may temporarily turn off the Check Engine Light, it is important to diagnose and fix the underlying issue causing the code to prevent further problems.

8. How much does it typically cost to repair OBDII code P0123 in a 2001 Ford F150?

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

9. Can a DIY enthusiast fix OBDII code P0123 in a 2001 Ford F150?

- Depending on the individual's skill level, diagnosing and repairing the code may be possible. However, it is recommended to consult a professional if unsure.

10. How often does OBDII code P0123 occur in a 2001 Ford F150?

- The occurrence of this code can vary, but it is not uncommon in vehicles with higher mileage or older throttle position sensors. Regular maintenance can help prevent it.