AutoCodes – Buick – P1E08 Buick

P1E08 Buick Code - Hybrid Battery Contactor Status Circuit Low Voltage

Quick Answer

The hybrid powertrain control module monitors the hybrid/EV battery high voltage contactor status and requests contactor function primarily via serial data. Common causes include Faulty Power Inverter Module, Power Inverter Module harness is open or shorted, Power Inverter Module 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: P1E08 Buick indicates Hybrid Battery Contactor Status Circuit Low Voltage.
Common causes: Common causes include Faulty Power Inverter Module, Power Inverter Module harness is open or shorted, Power Inverter Module 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 987

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 Apr 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1E08 Buick Description

The hybrid powertrain control module monitors the hybrid/EV battery high voltage contactor status and requests contactor function primarily via serial data. In the event of a serial data fault there is a redundant discreet circuit between the two controllers that transmits the hybrid powertrain control module contactor requests to the hybrid powertrain control module 2 via a pulse width modulated (PWM) signal. The hybrid powertrain control module is internal to the power inverter module, often referred to as the drive motor generator power inverter module, and is not serviced separately.

OBDII Code P1E08 Buick - Hybrid Battery Contactor Status Circuit Low Voltage - AutoCodes.com — P1E08 Buick Code - Hybrid Battery Contactor Status Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1E08 Buick?

Faulty Power Inverter Module
Power Inverter Module harness is open or shorted
Power Inverter Module circuit poor electrical connection

How to Fix the DTC P1E08 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 P1E08 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.

Need more information about the P1E08 Buick code?

Need more information on how to fix the P1E08 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1E08 Buick code diagnosed by a professional: Find a repair shop in your area

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 P1E08 Buick Code

1. What does the OBDII code P1E08 mean on a Buick?

The P1E08 code indicates a low voltage issue in the Hybrid Battery Contactor Status Circuit, which is part of the hybrid battery system in your Buick.

2. What are the common symptoms of code P1E08 on a Buick?

Symptoms may include the check engine light or hybrid system warning light turning on, reduced vehicle performance, or the inability for the hybrid system to function properly.

3. What causes the P1E08 code on a Buick?

Common causes include a faulty hybrid battery contactor, damaged wiring or connectors in the circuit, a malfunctioning battery control module, or a low voltage condition in the hybrid battery.

4. Can I drive my Buick with the P1E08 code?

Driving with the P1E08 code is not recommended, as it may lead to further damage to the hybrid system or cause the vehicle to become inoperable.

5. How do I diagnose the P1E08 code on my Buick?

Diagnosis involves checking the hybrid battery contactor, inspecting the wiring and connectors in the circuit for damage or corrosion, and testing the battery control module for proper operation.

6. How do I fix the P1E08 code on a Buick?

Repairs may include replacing a faulty hybrid battery contactor, repairing damaged wiring or connectors, or reprogramming or replacing the battery control module if necessary.

7. Does a low hybrid battery charge cause the P1E08 code?

Yes, a low charge or malfunction in the hybrid battery can contribute to the P1E08 code, as it may result in low voltage in the contactor circuit.

8. How much does it cost to fix the P1E08 code on a Buick?

Repair costs vary depending on the issue but can range from $200 to $1,500 or more, depending on whether wiring repairs, contactor replacement, or module replacement is needed.

9. Can a software update fix the P1E08 code?

In some cases, a software update for the battery control module may resolve the issue if it is caused by a programming error.

10. Is the P1E08 code covered under warranty for my Buick?

If your vehicle is still under warranty, especially a hybrid-specific or emissions warranty, the repairs for the P1E08 code may be covered. Check with your dealer for details.