AutoCodes – Mazda – P0639 Mazda

P0639 Mazda Code - Throttle Actuator Control Range/Performance

Quick Answer

The Powertrain Control Module (PCM) compares the actual Throttle Possition (TP) with the target TP when the engine is running. Common causes include Drive-by-wire control system malfunction, Throttle actuator malfunction, Throttle valve malfunction. 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: P0639 Mazda indicates Throttle Actuator Control Range/Performance.
Common causes: Common causes include Drive-by-wire control system malfunction, Throttle actuator malfunction, Throttle valve malfunction.
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 3,524

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 May 01, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0639 Mazda Description

The Powertrain Control Module (PCM) compares the actual Throttle Possition (TP) with the target TP when the engine is running. If the difference is more than the specification, the PCM determines that there is a throttle actuator control circuit range/performance problem.

OBDII Code P0639 Mazda - Throttle Actuator Control Range/Performance - AutoCodes.com — P0639 Mazda Code - Throttle Actuator Control Range/Performance

What does this mean?

What are the Possible Causes of the DTC P0639 Mazda?

Drive-by-wire control system malfunction
Throttle actuator malfunction
Throttle valve malfunction
PCM malfunction

How to Fix the DTC P0639 Mazda?

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

Dirty or clogged throttle body can triggered the P0639 code. Before replacing any parts try cleaning the throttle body and reset the engine light.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0639 Mazda 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 P0639 Mazda code?

Need more information on how to fix the P0639 Mazda 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 P0639 Mazda Code

1. What are the common symptoms of OBDII code P0639 in a Mazda related to Throttle Actuator Control Range/Performance?

- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into limp mode.

2. What are the possible causes of OBDII code P0639 (Throttle Actuator Control Range/Performance) in a Mazda?

- Possible causes may include a faulty throttle actuator, damaged wiring or connectors, a dirty throttle body, or issues with the throttle position sensor.

3. How can I diagnose OBDII code P0639 on my Mazda related to Throttle Actuator Control Range/Performance?

- Diagnosis typically involves using a scan tool to retrieve the code, checking the throttle actuator for proper operation, inspecting wiring and connectors for damage, and testing the throttle position sensor.

4. Can I still drive my Mazda with OBDII code P0639 (Throttle Actuator Control Range/Performance)?

- It is not recommended to drive your Mazda with this code as it can lead to unsafe driving conditions and potential damage to the vehicle. It's best to address the issue promptly.

5. How can I repair OBDII code P0639 on my Mazda related to Throttle Actuator Control Range/Performance?

- Repair options may include replacing the throttle actuator, repairing damaged wiring or connectors, cleaning the throttle body, or recalibrating the throttle position sensor as needed.

6. Will resetting the OBDII code P0639 in my Mazda clear the issue related to Throttle Actuator Control Range/Performance?

- Resetting the code may temporarily clear the check engine light, but it will not fix the underlying issue causing the code to trigger. Proper diagnosis and repair are necessary.

7. Is it possible to prevent OBDII code P0639 (Throttle Actuator Control Range/Performance) in my Mazda?

- Regular maintenance, such as cleaning the throttle body, inspecting wiring for damage, and addressing any throttle-related issues promptly, can help prevent this code from appearing.

8. Can a DIY enthusiast fix OBDII code P0639 on a Mazda related to Throttle Actuator Control Range/Performance?

- Depending on the DIYer's skill level and access to tools, some repairs related to this code can be tackled at home. However, complex issues may require professional diagnosis and repair.

9. How long does it typically take to repair OBDII code P0639 in a Mazda related to Throttle Actuator Control Range/Performance?

- Repair times can vary based on the specific cause of the code and the complexity of the repair. It's advisable to consult a mechanic for a more accurate estimate.

10. Can OBDII code P0639 (Throttle Actuator Control Range/Performance) in a Mazda cause further damage if left unaddressed?

- Yes, if left unresolved, this code can lead to more severe engine performance issues, decreased fuel efficiency, and potential damage to other components. Addressing it promptly is recommended.