AutoCodes – GMC – P1A36 GMC

P1A36 GMC Code - Hybrid Battery 3 Voltage High

Quick Answer

Battery voltage sensors allow the Energy Storage Control Module (ESCM) to monitor the voltage of the batteries in the Energy Storage Box (ESB). Common causes include Faulty Energy Storage Box (ESB) Battery, Faulty Battery Energy Control Module (BECM), Battery Energy Control Module (BECM) harness is open or shorted. 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: P1A36 GMC indicates Hybrid Battery 3 Voltage High.
Common causes: Common causes include Faulty Energy Storage Box (ESB) Battery, Faulty Battery Energy Control Module (BECM), Battery Energy Control Module (BECM) harness is open or shorted.
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 1,016

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 Feb 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A36 GMC Description

Battery voltage sensors allow the Energy Storage Control Module (ESCM) to monitor the voltage of the batteries in the Energy Storage Box (ESB). The batteries apply voltage to internal input resistors that are connected to the signal circuits of the battery voltage sensors. The module provides ground to the battery voltage sensors through the reference circuit. The ESCM monitors the voltage drop across the battery voltage sensors and uses the inputs for hybrid calculations. When the battery voltage is high, the resistances of the sensors are high and the voltage signals are high. When the battery voltage is low, the resistances of the sensors are low and the voltage signals are low.

OBDII Code P1A36 GMC - Hybrid Battery 3 Voltage High - AutoCodes.com — P1A36 GMC Code - Hybrid Battery 3 Voltage High

What does this mean?

What are the Possible Causes of the DTC P1A36 GMC?

Faulty Energy Storage Box (ESB) Battery
Faulty Battery Energy Control Module (BECM)
Battery Energy Control Module (BECM) harness is open or shorted
Battery Energy Control Module (BECM) circuit poor electrical connection

How to Fix the DTC P1A36 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 P1A36 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 P1A36 GMC Code

1. What are common symptoms of OBDII code P1A36 GMC (Hybrid Battery 3 Voltage High)?

- The common symptoms include the check engine light illuminating on the dashboard, reduced hybrid system performance, and potential issues with the hybrid battery.

2. What are possible causes of OBDII code P1A36 GMC?

- The code P1A36 GMC can be triggered by a faulty hybrid battery cell, issues with the battery management system, or a problem with the high voltage wiring in the hybrid system.

3. How serious is OBDII code P1A36 GMC (Hybrid Battery 3 Voltage High)?

- This code should be addressed promptly as it indicates a potential issue with the hybrid battery system, which can impact the overall performance and safety of the vehicle.

4. Can driving with OBDII code P1A36 GMC cause further damage?

- Continuing to drive with this code present may lead to further damage to the hybrid battery system and other related components, potentially resulting in more expensive repairs.

5. How can OBDII code P1A36 GMC be diagnosed?

- Diagnosis of this code typically involves using a professional OBDII scanner to retrieve the specific fault codes and conducting further testing to pinpoint the exact cause of the high voltage reading.

6. Is it safe to continue driving with OBDII code P1A36 GMC illuminated?

- It is not recommended to continue driving with this code illuminated, as it indicates a potential issue with the hybrid battery system that can compromise vehicle performance and safety.

7. What are some repair tips for fixing OBDII code P1A36 GMC?

- Repair tips may include inspecting the hybrid battery cells for any signs of damage, checking the battery management system for faults, and ensuring all high voltage wiring is properly connected and functioning.

8. Can I reset OBDII code P1A36 GMC without addressing the underlying issue?

- While you can reset the code temporarily, it is crucial to address the underlying issue causing the high voltage reading to prevent further damage to the hybrid system.

9. How much does it cost to repair OBDII code P1A36 GMC?

- The cost of repairing this code can vary depending on the specific cause of the issue, but it may involve replacing faulty hybrid battery cells, repairing the battery management system, or addressing high voltage wiring problems.

10. Can a DIY enthusiast fix OBDII code P1A36 GMC on their own?

- Due to the complexity and safety concerns associated with the hybrid battery system, it is recommended to seek professional assistance or specialized hybrid vehicle repair services to address OBDII code P1A36 GMC effectively.