AutoCodes – Cadillac – P1E08 Cadillac

P1E08 Cadillac 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 Cadillac 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 803

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

What does this mean?

What are the Possible Causes of the DTC P1E08 Cadillac?

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 Cadillac?

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 Cadillac 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 Cadillac code?

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

Need Help with the Code?

Get the P1E08 Cadillac 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 Cadillac Code

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

P1E08 indicates a "Hybrid Battery Contactor Status Circuit Low Voltage," which means thereâ€™s an issue with the electrical circuit monitoring the hybrid battery contactor.

2. What are the common symptoms of code P1E08 in a Cadillac?

Symptoms may include the hybrid system not functioning properly, a decrease in overall performance, warning lights on the dash, or the vehicle operating in reduced power mode.

3. What causes the P1E08 code to appear in a Cadillac?

Potential causes include damaged or corroded wiring, a faulty hybrid battery contactor, a malfunctioning control module, or poor electrical connections.

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

Driving with this code is not recommended, as it can lead to reduced performance or cause further damage to the hybrid system.

5. How is the P1E08 code diagnosed?

A technician will use an advanced scan tool to check the hybrid control module, inspect the wiring and connectors, and test the hybrid battery contactor for proper operation.

6. How can I fix the P1E08 code on my Cadillac?

Repairs may involve replacing the hybrid battery contactor, repairing or replacing damaged wiring, cleaning corroded terminals, or reprogramming the control module.

7. What tools are needed to troubleshoot the P1E08 code?

Common tools include an OBDII scan tool, a multimeter for testing voltage, and access to the vehicleâ€™s wiring diagrams.

8. Does a faulty hybrid battery cause the P1E08 code?

While the hybrid battery is not directly the cause, issues with its contactor or the circuitry monitoring it can trigger this code.

9. How much does it cost to repair the P1E08 code in a Cadillac?

Repair costs vary depending on the exact issue but can range from $150 for minor wiring repairs to over $1,000 if the contactor or control module needs replacement.

10. Can a software update fix the P1E08 code?

In some cases, a software update for the hybrid control module may resolve the issue if the problem is related to programming rather than hardware.