AutoCodes – Buick – P06E4 Buick

P06E4 Buick Code - Control Module Wake-Up Circuit Performance

Quick Answer

The Accessory Wake Up Serial Data 2 circuit is activated by the Hybrid Powertrain Control Module 2 (HPCM2) to immediately power up other control modules connected to this circuit. Common causes include Faulty Hybrid Powertrain Control Module 2 (HPCM2), Hybrid Powertrain Control Module 2 harness is open or shorted, Hybrid Powertrain Control Module 2 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: P06E4 Buick indicates Control Module Wake-Up Circuit Performance.
Common causes: Common causes include Faulty Hybrid Powertrain Control Module 2 (HPCM2), Hybrid Powertrain Control Module 2 harness is open or shorted, Hybrid Powertrain Control Module 2 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 160

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 27, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P06E4 Buick Description

The Accessory Wake Up Serial Data 2 circuit is activated by the Hybrid Powertrain Control Module 2 (HPCM2) to immediately power up other control modules connected to this circuit. This process occurs when the Body Control Module (BCM) signals the HPCM2, indicating that serial data transmission is required. In response, the HPCM2 energizes the circuit to ensure that all necessary modules are ready to communicate and perform their respective functions.
A Diagnostic Trouble Code (DTC) is triggered when the HPCM2 detects a fault or failure in the output wake-up circuit. This malfunction can prevent the control modules from receiving the necessary wake-up signal, potentially disrupting the vehicle's communication network and affecting the operation of various systems.

OBDII Code P06E4 Buick - Control Module Wake-Up Circuit Performance - AutoCodes.com — P06E4 Buick Code - Control Module Wake-Up Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P06E4 Buick?

Faulty Hybrid Powertrain Control Module 2 (HPCM2)
Hybrid Powertrain Control Module 2 harness is open or shorted
Hybrid Powertrain Control Module 2 circuit poor electrical connection

How to Fix the DTC P06E4 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 P06E4 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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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 P06E4 Buick Code

1. What are the common symptoms of OBDII code P06E4 in a Buick?

- Common symptoms include issues with starting the vehicle, rough idling, poor acceleration, and possible stalling.

2. What can cause the OBDII code P06E4 in a Buick?

- The code can be triggered by a faulty control module, wiring issues in the wake-up circuit, or a software malfunction.

3. How do I diagnose the Control Module Wake-Up Circuit Performance issue in my Buick?

- Diagnosis typically involves using a scan tool to read the code, checking the wiring connections, and testing the control module for proper functioning.

4. Can a DIY enthusiast repair the OBDII code P06E4 in a Buick?

- While basic checks like inspecting wiring connections can be done by DIY enthusiasts, diagnosing and repairing control module issues may require professional help.

5. What are the repair options for fixing the Control Module Wake-Up Circuit Performance problem in a Buick?

- Repair options include fixing or replacing faulty wiring, repairing the control module, or updating the software to address the issue.

6. Is it safe to continue driving my Buick with the P06E4 OBDII code present?

- It is not recommended to ignore the code, as it can lead to further damage if left unresolved. It's best to address the issue promptly.

7. Can a weak car battery cause the OBDII code P06E4 to appear in a Buick?

- Yes, a weak or failing car battery can sometimes trigger this code due to insufficient power supply to the control module.

8. How long does it typically take to repair the Control Module Wake-Up Circuit Performance issue in a Buick?

- The repair time can vary depending on the exact cause of the problem. Simple fixes like reconnecting loose wiring may take less time compared to replacing a faulty control module.

9. Are there any preventive measures to avoid the P06E4 code from recurring in a Buick?

- Regular maintenance checks, including inspecting wiring connections and ensuring the battery is in good condition, can help prevent the code from reoccurring.

10. Can a dealership or auto repair shop reset the OBDII code P06E4 in a Buick?

- Yes, a dealership or auto repair shop with the necessary diagnostic tools can reset the code after addressing the underlying issue causing the Control Module Wake-Up Circuit Performance problem.