P1B37 GMC Code - Battery Energy Control Module Hybrid Battery Voltage Balance Processor 4 Performance
Quick Answer
The hybrid battery pack contains a total of 32 cell groups in the hybrid/EV battery pack assembly. 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
- P1B37 GMC indicates Battery Energy Control Module Hybrid Battery Voltage Balance Processor 4 Performance.
- 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 P1B37 GMC Description
The battery energy control module monitors the voltage of the 32 battery cell groups. A voltage sense circuit is attached to each individual cell group. Each of these circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness connectors the voltage sense circuits to the battery energy control module, located directly above the hybrid battery pack.
To ensure proper battery function and lengthen battery life, the battery energy control module balances the voltage of the cells so that each cells maintains the same voltage level. The battery energy control module uses internal voltage gates to transfer voltage from cells with a higher voltage level to those cells with a lower voltage level. To maintain a similar state of charge on the cell groups, the starter/generator control module monitors the cell voltages and determines which cells need energy removed in order to maintain the cells at a similar state of charge. A resistor wired in parallel with the cell and a transistor switch in series with the resistor internal to the battery energy control module. The starter/generator control module sends a command to the battery energy control module to begin cell balancing.
What are the Possible Causes of the DTC P1B37 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 P1B37 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 P1B37 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 P1B37 GMC Code
1. What are the common symptoms of OBDII code P1B37 GMC?
The common symptoms of code P1B37 GMC include reduced hybrid system performance, decreased fuel efficiency, and potential issues with the hybrid battery.
2. What can cause OBDII code P1B37 GMC to trigger?
Code P1B37 GMC is typically triggered by a malfunction in the Battery Energy Control Module Hybrid Battery Voltage Balance Processor 4, which can be caused by a faulty module, wiring issues, or hybrid battery problems.
3. How serious is OBDII code P1B37 GMC?
Code P1B37 GMC should be addressed promptly as it can lead to reduced hybrid system efficiency and potential damage to the hybrid battery if left unresolved.
4. Can I continue driving with OBDII code P1B37 GMC present?
It is not recommended to continue driving with code P1B37 GMC present, as it can affect the performance and efficiency of your hybrid vehicle.
5. How can I diagnose OBDII code P1B37 GMC?
Diagnosing code P1B37 GMC typically involves using a professional OBDII scanner to retrieve the code and then conducting further testing on the Battery Energy Control Module and hybrid battery components.
6. What are some repair tips for OBDII code P1B37 GMC?
Repairing code P1B37 GMC may involve replacing the faulty Battery Energy Control Module Hybrid Battery Voltage Balance Processor 4, checking and repairing any damaged wiring, or addressing issues with the hybrid battery.
7. Can I reset OBDII code P1B37 GMC without fixing the underlying issue?
While you can clear the code temporarily, it is crucial to address the underlying issue causing code P1B37 GMC to prevent further problems and ensure the proper functioning of your hybrid vehicle.
8. How much does it cost to repair OBDII code P1B37 GMC?
The cost of repairing code P1B37 GMC can vary depending on the specific issue, parts needed, and labor costs. It is recommended to consult a professional mechanic for an accurate estimate.
9. Are there any recalls or technical service bulletins related to OBDII code P1B37 GMC?
It is advisable to check with the manufacturer or a dealership to inquire about any recalls or technical service bulletins related to code P1B37 GMC for your specific vehicle model.
10. How can I prevent OBDII code P1B37 GMC from recurring?
Regular maintenance, timely inspections of the hybrid system components, and addressing any related issues promptly can help prevent code P1B37 GMC from recurring in the future.
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