AutoCodes – Buick – P1A35 Buick

P1A35 Buick Code - Hybrid Battery 3 Voltage Very Low

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: P1A35 Buick indicates Hybrid Battery 3 Voltage Very Low.
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 993

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 P1A35 Buick 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 P1A35 Buick - Hybrid Battery 3 Voltage Very Low - AutoCodes.com — P1A35 Buick Code - Hybrid Battery 3 Voltage Very Low

What does this mean?

What are the Possible Causes of the DTC P1A35 Buick?

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 P1A35 Buick?

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 P1A35 Buick 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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Need Help with the Code?

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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 P1A35 Buick Code

1. What are the common symptoms of OBDII code P1A35 in a Buick Hybrid related to "Hybrid Battery 3 Voltage Very Low"?

- Common symptoms may include poor fuel economy, loss of power, difficulty starting the vehicle, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P1A35 in a Buick Hybrid indicating "Hybrid Battery 3 Voltage Very Low"?

- Possible causes include a faulty hybrid battery cell, internal battery module issues, damaged battery wiring, or a problem with the battery control module.

3. How can I diagnose OBDII code P1A35 in a Buick Hybrid for "Hybrid Battery 3 Voltage Very Low"?

- Diagnosis typically involves performing a scan tool analysis to pinpoint the exact battery cell or module causing the low voltage issue. It may also require a visual inspection of the battery components.

4. Is it safe to continue driving my Buick Hybrid with OBDII code P1A35 indicating "Hybrid Battery 3 Voltage Very Low"?

- It is not recommended to drive the vehicle with this code, as it can lead to further damage to the hybrid battery system and potentially cause the vehicle to stall unexpectedly.

5. How can I reset OBDII code P1A35 in a Buick Hybrid for "Hybrid Battery 3 Voltage Very Low"?

- Resetting the code typically involves using an OBDII scanner to clear the code after addressing the underlying issue with the hybrid battery system.

6. Can I repair OBDII code P1A35 in a Buick Hybrid related to "Hybrid Battery 3 Voltage Very Low" myself?

- Repairing this code may require specialized knowledge of hybrid vehicle systems and high-voltage components. It is recommended to seek professional assistance for diagnosis and repair.

7. What are some general tips for maintaining the hybrid battery system in a Buick to prevent OBDII code P1A35 from occurring?

- Regularly inspect the battery system for any signs of corrosion, damage, or leaks. Follow the manufacturer's recommended maintenance schedule for the hybrid system.

8. How much does it typically cost to repair OBDII code P1A35 in a Buick Hybrid indicating "Hybrid Battery 3 Voltage Very Low"?

- The cost of repair can vary depending on the specific issue causing the low voltage code. It is advisable to obtain quotes from reputable hybrid vehicle specialists.

9. Can extreme weather conditions affect the hybrid battery system in a Buick and trigger OBDII code P1A35 for "Hybrid Battery 3 Voltage Very Low"?

- Yes, extreme temperatures can impact the performance of the hybrid battery system, potentially leading to voltage issues and triggering the P1A35 trouble code.

10. Is there a warranty or recall related to OBDII code P1A35 in Buick Hybrids for "Hybrid Battery 3 Voltage Very Low"?

- It is advisable to check with Buick or authorized service centers to inquire about any existing warranties or recalls related to this specific OBDII trouble code.