AutoCodes – Buick – P1AEB Buick

P1AEB Buick Code - Drive Motor 2 Control Module Hybrid Battery Voltage Sense Circuit High Voltage

Quick Answer

The Drive Motor Generator Power Inverter Module contains two drive motor control modules. Common causes include Faulty Drive Motor Generator Power Inverter Module, Drive Motor Generator Power Inverter Module harness is open or shorted, Drive Motor Generator 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
P1AEB Buick indicates Drive Motor 2 Control Module Hybrid Battery Voltage Sense Circuit High Voltage.
Common causes
Common causes include Faulty Drive Motor Generator Power Inverter Module, Drive Motor Generator Power Inverter Module harness is open or shorted, Drive Motor Generator 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.
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Code Popularity 733
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 01, 2020
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Code P1AEB Buick Description

The Drive Motor Generator Power Inverter Module contains two drive motor control modules. Each drive motor control module monitors its internal high voltage sensor for correct operation, no external circuits are involved. The modules listed below are part of the drive motor generator power inverter module and are not serviced separately.
-Hybrid powertrain control module
-Motor control module 1
-Motor control module 2
OBDII Code P1AEB Buick - Drive Motor 2 Control Module Hybrid Battery Voltage Sense Circuit High Voltage - AutoCodes.com
P1AEB Buick Code - Drive Motor 2 Control Module Hybrid Battery Voltage Sense Circuit High Voltage

What are the Possible Causes of the DTC P1AEB Buick?

  • Faulty Drive Motor Generator Power Inverter Module
  • Drive Motor Generator Power Inverter Module harness is open or shorted
  • Drive Motor Generator Power Inverter Module circuit poor electrical connection

How to Fix the DTC P1AEB 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 P1AEB 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 P1AEB Buick Code

1. What does the OBDII code P1AEB mean for a Buick?

P1AEB indicates an issue with the Drive Motor 2 Control Module Hybrid Battery Voltage Sense Circuit, specifically detecting high voltage.

2. What are the symptoms of code P1AEB in a Buick?

Common symptoms include a check engine light, reduced hybrid system performance, poor fuel economy, or the vehicle entering limp mode.

3. What causes code P1AEB to trigger in a Buick?

Potential causes include a faulty Drive Motor 2 Control Module, damaged wiring or connectors in the voltage sense circuit, or a malfunctioning hybrid battery pack.

4. How is code P1AEB diagnosed?

A technician will use a scan tool to confirm the code, inspect the hybrid battery voltage sense circuit wiring, and check the Drive Motor 2 Control Module for faults.

5. Can I drive my Buick with a P1AEB code?

Driving with a P1AEB code is not recommended, as it may lead to further damage to the hybrid system or reduced vehicle performance.

6. How is the P1AEB code fixed in a Buick?

Repairs may involve replacing or repairing damaged wiring, replacing the Drive Motor 2 Control Module, or addressing issues with the hybrid battery pack.

7. Does a P1AEB code always mean the hybrid battery is failing?

No, the issue could also be related to the voltage sense circuit wiring or control module, not necessarily the hybrid battery itself.

8. How much does it cost to repair a P1AEB code on a Buick?

Repair costs vary depending on the exact issue but can range from $200 to over $1,000 if major components like the control module or hybrid battery need replacement.

9. Can a software update fix the P1AEB code in a Buick?

In some cases, a software update for the hybrid control system may resolve the issue, but this depends on the specific diagnosis.

10. What tools are needed to troubleshoot the P1AEB code?

A professional-grade OBDII scanner and a multimeter are commonly used to diagnose and troubleshoot this code effectively.

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