AutoCodes – MINI – P0638 MINI

P0638 MINI 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: P0638 MINI 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 15,081

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 P0638 MINI 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 P0638 MINI - Throttle Actuator Control Range/Performance - AutoCodes.com — P0638 MINI Code - Throttle Actuator Control Range/Performance

What does this mean?

What are the Possible Causes of the DTC P0638 MINI?

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

How to Fix the DTC P0638 MINI?

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 P0638 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 P0638 MINI 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 P0638 MINI code?

Need more information on how to fix the P0638 MINI 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 P0638 MINI Code

1. What are common symptoms of OBDII code P0638 in a MINI related to throttle actuator control range/performance?

The common symptoms include reduced engine power, difficulty accelerating, and the vehicle going into limp mode.

2. What are some possible causes of OBDII code P0638 in a MINI?

Possible causes of this code include a faulty throttle actuator, wiring issues, a malfunctioning throttle position sensor, or a problem with the engine control module.

3. How can I diagnose the issue causing OBDII code P0638 in my MINI?

Diagnosing the issue may involve performing a visual inspection of the throttle actuator and its wiring, testing the throttle position sensor, and using a diagnostic scanner to read live data and monitor the throttle actuator's performance.

4. Can I still drive my MINI with OBDII code P0638 present?

It is not recommended to continue driving your MINI with this code present, as it can lead to further damage and potentially unsafe driving conditions. It's best to address the issue promptly.

5. How can I repair OBDII code P0638 related to throttle actuator control range/performance in my MINI?

Repair options may include replacing the faulty throttle actuator, repairing or replacing damaged wiring, calibrating the throttle position sensor, or reprogramming the engine control module.

6. Is it possible to reset OBDII code P0638 in a MINI without fixing the underlying issue?

While you can clear the code temporarily using a diagnostic scanner, it will likely reappear if the root cause of the problem is not addressed.

7. How much does it typically cost to repair OBDII code P0638 in a MINI at a mechanic or dealership?

The cost of repair can vary depending on the specific issue causing the code and the labor rates of the service provider. It's advisable to get a diagnostic assessment to determine the exact cost.

8. Are there any preventive maintenance measures to avoid OBDII code P0638 in a MINI?

Regularly servicing your vehicle, including checking the throttle system components during routine maintenance, can help prevent issues that may lead to this code.

9. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P0638 in a MINI?

Depending on the exact cause of the code, some DIY enthusiasts may be able to address the issue themselves, such as replacing a faulty throttle actuator or repairing damaged wiring. However, proper diagnosis is crucial.

10. How urgent is it to address OBDII code P0638 in a MINI?

It is recommended to address this code as soon as possible to prevent further damage to the vehicle and ensure safe operation. Driving with this code present can lead to performance issues and potential safety hazards.