P1A07 GMC Code - Battery Energy Control Module 5 V Reference Circuit
Quick Answer
The drive motor battery contains 288 cells. Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy Control 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
- P1A07 GMC indicates Battery Energy Control Module 5 V Reference Circuit.
- Common causes
- Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy Control 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.
Code P1A07 GMC Description
The battery energy control module monitors the voltage of the 96 cell groups. Voltage sense lines are attached to each individual cell group, and these sense lines terminate at a connector located on the top surface of the battery section. A serviceable voltage sense harness joins this connector to a drive motor battery high-voltage interface control module, also located on the top surface of the battery section. The drive motor battery high-voltage interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one drive motor battery high-voltage interface control module located on battery sections one and two, and two drive motor battery high-voltage interface control modules associated with battery section three. The drive motor battery high-voltage interface control module, voltage sense harnesses, battery control 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 P1A07 GMC?
- Faulty Battery Energy Control Module
- Battery Energy Control Module harness is open or shorted
- Battery Energy Control Module circuit poor electrical connection
How to Fix the DTC P1A07 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 P1A07 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.
Need more information about the P1A07 GMC code?
Need more information on how to fix the P1A07 GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1A07 GMC code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1A07 GMC Code
1. What does the OBDII code P1A07 mean on a GMC vehicle?
P1A07 indicates a problem with the Battery Energy Control Module (BECM) 5-volt reference circuit, which monitors and manages the hybrid or electric vehicle battery system.
2. What are the common symptoms of code P1A07 in a GMC?
Common symptoms include warning lights on the dashboard, reduced fuel efficiency, poor hybrid system performance, or the vehicle entering limp mode.
3. What causes the P1A07 code to appear?
The code can be triggered by a faulty Battery Energy Control Module, damaged wiring, a short or open in the 5-volt reference circuit, or a malfunctioning sensor connected to the circuit.
4. How is the P1A07 code diagnosed?
Technicians diagnose the code by using a scan tool to check for related codes, inspecting the wiring and connectors in the 5-volt reference circuit, and testing the functionality of the BECM and associated sensors.
5. Can I drive my GMC with the P1A07 code active?
Driving with this code is not recommended, as it can lead to reduced performance, potential battery damage, or safety issues with the hybrid or electric system.
6. How do you fix the P1A07 code on a GMC?
Repairs may include replacing damaged wiring or connectors, fixing short circuits, replacing a faulty sensor, or, in some cases, replacing the Battery Energy Control Module.
7. Is a software update needed to fix the P1A07 code?
In some cases, a software update for the Battery Energy Control Module may resolve the issue, but this depends on the specific vehicle and circumstances.
8. How much does it cost to repair the P1A07 code on a GMC?
Repair costs vary but may range from $150 to $1,500 depending on whether the fix involves wiring repairs, sensor replacement, or BECM replacement.
9. What tools are needed to troubleshoot the P1A07 code?
Common tools include an OBDII scanner, a multimeter for testing voltage, and wiring diagrams for the vehicle's 5-volt reference circuit.
10. Can a dead 12-volt battery cause the P1A07 code?
While unlikely, a weak or dead 12-volt battery can sometimes cause communication issues or faults in the BECM, indirectly triggering the code.
Discuss the causes and fixes for P1A07 GMC OBDII Code
Code P1A07 GMC 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.
