AutoCodesBuick – P06AC Buick

P06AC Buick Code - Control Module Power Up Temperature Sensor Performance

Quick Answer

The Transmission Control Module (TCM) power-up temperature sensor is located inside of the control solenoid valve assembly which has no serviceable parts. Common causes include Faulty Control Solenoid Valve Assembly. 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
P06AC Buick indicates Control Module Power Up Temperature Sensor Performance.
Common causes
Common causes include Faulty Control Solenoid Valve Assembly.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 391
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 19, 2022
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Code P06AC Buick Description

The Transmission Control Module (TCM) power-up temperature sensor is located inside of the control solenoid valve assembly which has no serviceable parts. The Transmission Control Module power-up temperature sensor provides the temperature of the Transmission Control Module when the Transmission Control Module power is on. This temperature reading is used in various shifting and diagnostic routines and also to protect the control solenoid valve assembly and Transmission Control Module. This fault is handled inside the Transmission Control Module and no external circuits are involved. The Diagnostic Trouble Code (DTC) will be set if the TCM detects an 8 - 10°C (14 - 18°F) or greater difference between the TCM substrate temperature and TCM power up the temperature, which depends on the average transmission fluid temperature, TCM substrate temperature, and TCM power up the temperature.
OBDII Code P06AC Buick - Control Module Power Up Temperature Sensor Performance - AutoCodes.com
P06AC Buick Code - Control Module Power Up Temperature Sensor Performance

What are the Possible Causes of the DTC P06AC Buick?

  • Faulty Control Solenoid Valve Assembly

How to Fix the DTC P06AC Buick?

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 P06AC Buick 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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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 P06AC Buick Code

1. What does the OBDII code P06AC mean on a Buick?

P06AC indicates an issue with the Control Module Power Up Temperature Sensor Performance, meaning the sensor is not functioning as expected during the control module's power-up phase.

2. What are the common symptoms of code P06AC in a Buick?

Symptoms may include an illuminated check engine light, poor engine performance, hard starting, or irregular temperature readings on the dashboard.

3. What causes the P06AC code to appear in a Buick?

Common causes include a faulty temperature sensor, damaged wiring or connectors, a malfunctioning control module, or issues with the power supply to the sensor.

4. Can I drive my Buick with the P06AC code active?

While the vehicle may still be drivable, ignoring the P06AC code could lead to engine performance issues or potential damage if the underlying problem worsens.

5. How is the P06AC code diagnosed?

A mechanic will use an OBDII scanner to confirm the code, inspect the temperature sensor, check wiring and connectors, and test the control module for proper function.

6. How do I fix the P06AC code on my Buick?

Repairs may involve replacing the faulty temperature sensor, repairing damaged wiring, cleaning or reconnecting connectors, or, in rare cases, replacing the control module.

7. How much does it cost to fix the P06AC code on a Buick?

Repair costs can vary but typically range from $100 to $300, depending on whether the issue is with the sensor, wiring, or control module.

8. Can a bad battery cause the P06AC code to appear?

Yes, a weak or failing battery can disrupt the power supply to the control module, potentially triggering the P06AC code.

9. What tools are needed to fix the P06AC code?

Common tools include an OBDII scanner, a multimeter for testing electrical components, and basic hand tools for removing and replacing parts.

10. Can I clear the P06AC code without fixing the issue?

You can clear the code with an OBDII scanner, but if the underlying problem isn’t resolved, the code will likely return.

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