AutoCodes – Buick – P1A22 Buick

P1A22 Buick Code - Hybrid Battery 1 Circuit Low Voltage

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: P1A22 Buick indicates Hybrid Battery 1 Circuit Low Voltage.
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 977

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 P1A22 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 P1A22 Buick - Hybrid Battery 1 Circuit Low Voltage - AutoCodes.com — P1A22 Buick Code - Hybrid Battery 1 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1A22 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 P1A22 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 P1A22 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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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 P1A22 Buick Code

1. What are the common symptoms of OBDII code P1A22 Buick (Hybrid Battery 1 Circuit Low Voltage)?

- The common symptoms include reduced hybrid system performance, poor fuel efficiency, and potential warning lights on the dashboard.

2. What are the possible causes of OBDII code P1A22 Buick (Hybrid Battery 1 Circuit Low Voltage)?

- The code can be triggered by issues such as a faulty hybrid battery, damaged wiring in the hybrid system, or problems with the battery control module.

3. How can I diagnose the OBDII code P1A22 Buick (Hybrid Battery 1 Circuit Low Voltage)?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the hybrid battery and related components for physical damage, and testing the voltage levels.

4. Is it safe to continue driving with OBDII code P1A22 Buick (Hybrid Battery 1 Circuit Low Voltage)?

- It is not recommended to continue driving with this code as it can lead to further damage to the hybrid system and potentially leave you stranded.

5. Can I reset the OBDII code P1A22 Buick (Hybrid Battery 1 Circuit Low Voltage) myself?

- While you can clear the code with an OBDII scanner, it is essential to address the underlying issue causing the code to prevent it from reoccurring.

6. How much does it typically cost to repair OBDII code P1A22 Buick (Hybrid Battery 1 Circuit Low Voltage)?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the hybrid battery, repairing wiring, or reprogramming the battery control module.

7. Are there any DIY tips for resolving OBDII code P1A22 Buick (Hybrid Battery 1 Circuit Low Voltage)?

- DIY tips may include checking the battery connections for tightness, inspecting the wiring for any visible damage, and ensuring the hybrid battery is properly charged.

8. What are the long-term effects of ignoring OBDII code P1A22 Buick (Hybrid Battery 1 Circuit Low Voltage)?

- Ignoring this code can lead to further damage to the hybrid system, reduced fuel efficiency, and potential safety hazards while driving.

9. Can extreme weather conditions impact OBDII code P1A22 Buick (Hybrid Battery 1 Circuit Low Voltage)?

- Yes, extreme temperatures can affect the performance of the hybrid battery and may contribute to triggering the low voltage code.

10. How often should I have my hybrid system inspected to prevent OBDII code P1A22 Buick (Hybrid Battery 1 Circuit Low Voltage)?

- It is recommended to have your hybrid system inspected regularly as part of routine maintenance to catch any potential issues before they trigger trouble codes like P1A22.