P1BA2 Buick Code - Hybrid/Electric Vehicle Battery 64 Circuit Performance
Quick Answer
The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. 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
- P1BA2 Buick indicates Hybrid/Electric Vehicle Battery 64 Circuit Performance.
- Common causes
- Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
- 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.
Code P1BA2 Buick Description
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.
What are the Possible Causes of the DTC P1BA2 Buick?
- Faulty Hybrid/Electric Vehicle Battery Pack
- Faulty Hybrid/Electric Vehicle Battery Interface Control Module
How to Fix the DTC P1BA2 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 P1BA2 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 P1BA2 Buick code?
Need more information on how to fix the P1BA2 Buick code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1BA2 Buick code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1BA2 Buick Code
1. What does the OBDII code P1BA2 mean for a Buick?
P1BA2 refers to a performance issue in the Hybrid/Electric Vehicle Battery 64 Circuit, indicating a problem with voltage or communication related to a specific battery module.
2. What are the common symptoms of the P1BA2 code in a Buick?
Symptoms may include a check engine light, reduced hybrid or EV performance, limited power mode, and decreased fuel efficiency.
3. What causes the P1BA2 code in Buick hybrid or electric vehicles?
Common causes include a faulty battery module, poor electrical connections, damaged wiring, or a malfunction in the battery control module (BCM).
4. Can I drive my Buick with the P1BA2 code active?
It’s not recommended to drive with this code active, as it may lead to reduced performance and potential damage to the hybrid/electric battery system.
5. How do I diagnose the P1BA2 code in my Buick?
Diagnosis typically involves scanning for additional codes, inspecting the battery module and its wiring, and testing the battery control module for faults.
6. What repairs can fix the P1BA2 code in a Buick?
Repairs may include replacing a faulty battery module, repairing damaged wiring or connectors, or reprogramming or replacing the battery control module.
7. How much does it cost to repair the P1BA2 code?
Repair costs vary but can range from $200 for simple wiring repairs to $1,000 or more for battery module replacement or BCM repair.
8. Can a weak 12V battery trigger the P1BA2 code in a Buick?
While unlikely, a weak 12V battery can sometimes cause communication errors and should be tested to rule it out as a contributing factor.
9. Will clearing the P1BA2 code fix the issue permanently?
Clearing the code may turn off the check engine light temporarily, but the underlying issue must be repaired to prevent the code from returning.
10. Is the P1BA2 code covered under warranty for Buick hybrid or electric vehicles?
It may be covered under the hybrid/electric system warranty, depending on the vehicle's age and mileage, so check with your dealer for details.
Discuss the causes and fixes for P1BA2 Buick OBDII Code
Code P1BA2 Buick comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
