AutoCodes – Generic – P1544

P1544 Code - Throttle Actuation Potentiometer Signal Too High

Quick Answer

P1544 indicates Throttle Actuation Potentiometer Signal Too High. Common causes include Faulty Throttle Valve Control Module, Faulty Throttle Actuator, Throttle Actuator harness is open or shorted. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P1544 indicates Throttle Actuation Potentiometer Signal Too High.
Common causes: Common causes include Faulty Throttle Valve Control Module, Faulty Throttle Actuator, Throttle Actuator harness is open or shorted.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 22,026

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 29, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1544 Description

OBDII Code P1544 - Throttle Actuation Potentiometer Signal Too High - AutoCodes.com — P1544 Code - Throttle Actuation Potentiometer Signal Too High

What does this mean?

What are the Possible Causes of the DTC P1544?

Faulty Throttle Valve Control Module
Faulty Throttle Actuator
Throttle Actuator harness is open or shorted
Throttle Actuator circuit poor electrical connection

How to Fix the DTC P1544?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1544 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 P1544 code?

Need more information on how to fix the P1544 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1544 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1544 Audi — Throttle Actuation Potentiometer Signal Too High
P1544 BMW — Pedal Position Sensor
P1544 Buick — A/C Refrigerant Condition Very Low
P1544 Cadillac — A/C Refrigerant Condition Very Low
P1544 Chevrolet — A/C Refrigerant Condition Very Low
P1544 GMC — A/C Refrigerant Condition Very Low
P1544 MINI — Pedal Position Sensor
P1544 Mitsubishi — DOR Radiator Tampering Monitor Temp Check Before Thermostat Open
P1544 Subaru — Exhaust Gas Temperature Sensor Increased Temperature Detected
P1544 Volkswagen — Throttle Actuation Potentiometer Signal Too High

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 P1544 Code

1. What are the common symptoms of OBDII code P1544 (Throttle Actuation Potentiometer Signal Too High)?

- Common symptoms may include issues with acceleration, poor engine performance, stalling, and the illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P1544?

- The code P1544 can be triggered by a faulty throttle actuation potentiometer, issues with the throttle position sensor, wiring problems, or a problem with the throttle body itself.

3. How can I diagnose the cause of OBDII code P1544?

- Diagnosing the cause of P1544 typically involves checking the throttle actuation potentiometer, throttle position sensor, and related wiring for any signs of damage or malfunction using a diagnostic scanner.

4. Can a dirty throttle body cause OBDII code P1544?

- Yes, a dirty or clogged throttle body can disrupt the signal from the throttle actuation potentiometer or throttle position sensor, potentially triggering code P1544.

5. How can I repair OBDII code P1544?

- Repairing code P1544 may involve cleaning or replacing the throttle body, inspecting and repairing any damaged wiring, replacing the throttle actuation potentiometer, or recalibrating the throttle position sensor.

6. Is it safe to continue driving with OBDII code P1544?

- It is not recommended to drive with code P1544 present, as it can lead to further engine issues and potential safety hazards. It's best to address the problem promptly.

7. Can I reset OBDII code P1544 without fixing the underlying issue?

- While you can clear the code with a diagnostic scanner, it will likely reappear if the root cause of the problem, such as a faulty throttle actuation potentiometer, is not addressed.

8. How much does it typically cost to repair OBDII code P1544?

- The cost of repairing code P1544 can vary depending on the specific cause of the issue and the labor rates in your area. It's best to consult a mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P1544?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address code P1544 by cleaning the throttle body, checking the wiring, or replacing the throttle actuation potentiometer.

10. How often does OBDII code P1544 occur in vehicles?

- OBDII code P1544 (Throttle Actuation Potentiometer Signal Too High) is a relatively common issue in vehicles with electronic throttle control systems, especially in older vehicles or those with high mileage.