AutoCodes – GMC – P1B80 GMC

P1B80 GMC Code - Hybrid/Electric Vehicle Battery 52 Circuit High Voltage

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: P1B80 GMC indicates Hybrid/Electric Vehicle Battery 52 Circuit High Voltage.
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.

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Code Popularity 880

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 Mar 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B80 GMC Description

The Hybrid/Electric Vehicle battery pack contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the hybrid/EV battery pack assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 V, for a nominal system voltage of 355 V direct current. The battery cells are also grouped together into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the cowl and contains batteries 67 through to 96. Battery section two is located behind section one. It is made up of 72 cells/24 cell groups and contains batteries 43 through to 66. The transverse battery section is section number three, it is made up of the remaining 126 cells/42 cell groups and contains batteries 1 through to 42. The three battery sections are individually serviceable components.
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.

OBDII Code P1B80 GMC - Hybrid/Electric Vehicle Battery 52 Circuit High Voltage - AutoCodes.com — P1B80 GMC Code - Hybrid/Electric Vehicle Battery 52 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B80 GMC?

Faulty Hybrid/Electric Vehicle Battery Pack
Faulty Hybrid/Electric Vehicle Battery Interface Control Module

How to Fix the DTC P1B80 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 P1B80 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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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 P1B80 GMC Code

1. What does the OBDII code P1B80 mean on a GMC vehicle?

The P1B80 code indicates a high voltage issue in the Hybrid/Electric Vehicle Battery 52 Circuit, which is part of the battery management system.

2. What are the common symptoms of the P1B80 code?

Symptoms may include an illuminated check engine light, reduced hybrid system performance, limited EV mode functionality, or warning messages related to the battery system.

3. What causes the P1B80 code to appear?

Possible causes include a faulty battery module, damaged wiring or connectors in the circuit, a malfunctioning battery control module, or electrical imbalances in the battery pack.

4. Can the P1B80 code affect vehicle drivability?

Yes, it can lead to reduced hybrid or electric system performance, limited power output, or the vehicle entering a limp mode to protect the battery system.

5. How is the P1B80 code diagnosed?

Diagnosis typically involves using a scan tool to read the code, inspecting the battery circuit wiring and connectors, testing the affected battery module, and checking the battery control module for faults.

6. Can you drive with the P1B80 code active?

While the vehicle may still be drivable, it is not recommended as it can lead to further damage to the battery system or reduced vehicle performance.

7. How can the P1B80 code be fixed?

Repairs may involve replacing a faulty battery module, repairing or replacing damaged wiring, or recalibrating/updating the battery control module software.

8. Is the P1B80 code covered under warranty?

Hybrid or electric vehicle battery components may be covered under extended warranties, but coverage varies, so check your vehicleâ€™s warranty details.

9. How much does it cost to repair the P1B80 code on a GMC?

Repair costs depend on the exact issue but can range from $200 for wiring repairs to over $1,000 if a battery module needs replacement.

10. Can a dead 12-volt battery cause the P1B80 code?

A weak or dead 12-volt battery can sometimes trigger hybrid system errors, but the P1B80 code specifically points to issues in the high-voltage battery circuit.