P1B25 GMC Code - Hybrid/Electric Vehicle Battery 32 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
- P1B25 GMC indicates Hybrid/Electric Vehicle Battery 32 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 P1B25 GMC 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 P1B25 GMC?
- Faulty Hybrid/Electric Vehicle Battery Pack
- Faulty Hybrid/Electric Vehicle Battery Interface Control Module
How to Fix the DTC P1B25 GMC?
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 P1B25 GMC 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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Frequently Asked Questions about P1B25 GMC Code
1. What does the OBDII code P1B25 mean on a GMC vehicle?
P1B25 indicates an issue with the Hybrid/Electric Vehicle Battery 32 Circuit Performance, signaling a problem in the specific battery circuit's operation.
2. What are the common symptoms of code P1B25 in a GMC?
Symptoms may include a check engine light, reduced hybrid/electric system performance, decreased fuel efficiency, or the vehicle entering a reduced power mode.
3. What causes the P1B25 code to appear on a GMC hybrid or electric vehicle?
The code can be triggered by a faulty battery module, poor electrical connections, damaged wiring within the battery circuit, or a malfunctioning battery control module.
4. Can I still drive my GMC with the P1B25 code active?
While the vehicle may still be drivable, continuing to drive with this code can lead to further damage to the hybrid/electric battery system or reduced performance.
5. How can I diagnose the P1B25 code on a GMC vehicle?
Start by scanning the vehicle with an OBDII scanner, inspecting the battery circuits and wiring for damage, and checking for faulty connections in the battery control module.
6. What repairs are typically needed to fix the P1B25 code?
Repairs may include replacing the faulty battery module, repairing or replacing damaged wiring, cleaning or tightening electrical connections, or reprogramming the battery control module.
7. How much does it cost to fix the P1B25 code on a GMC?
Repair costs can vary widely depending on the root cause but may range from $100 for minor wiring repairs to over $1,000 for battery module replacement.
8. Can a weak 12-volt battery cause the P1B25 code on a GMC hybrid?
No, the P1B25 code specifically relates to the high-voltage hybrid/electric battery system, not the 12-volt auxiliary battery.
9. Does the P1B25 code require reprogramming of the battery control module?
Reprogramming may be necessary if the issue is software-related or if the battery control module has been replaced.
10. Is the P1B25 code covered under GMC’s hybrid/electric vehicle warranty?
It depends on the vehicle's age, mileage, and specific warranty coverage; consult your owner’s manual or dealership for details.
Discuss the causes and fixes for P1B25 GMC OBDII Code
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