AutoCodes – Generic – P0B22

P0B22 Code - Hybrid Battery Pack Voltage Sense 'D' Circuit Intermittent/Erratic

Quick Answer

The Engine Control Module (ECM) monitors the Hybrid Battery Pack Voltage Sensor 'D' Circuit. Common causes include Faulty Hybrid Battery Pack, Hybrid Battery Pack harness is open or shorted, Hybrid Battery Pack 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: P0B22 indicates Hybrid Battery Pack Voltage Sense 'D' Circuit Intermittent/Erratic.
Common causes: Common causes include Faulty Hybrid Battery Pack, Hybrid Battery Pack harness is open or shorted, Hybrid Battery Pack 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.

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Code Popularity 2,150

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 Mar 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B22 Description

The Engine Control Module (ECM) monitors the Hybrid Battery Pack Voltage Sensor 'D' Circuit. The ECM sets the OBDII code when the Hybrid Battery Pack Voltage Sensor 'D' Circuit signal is out of factory specifications.

OBDII Code P0B22 - Hybrid Battery Pack Voltage Sense 'D' Circuit Intermittent/Erratic - AutoCodes.com — P0B22 Code - Hybrid Battery Pack Voltage Sense 'D' Circuit Intermittent/Erratic

What does this mean?

What are the Possible Causes of the DTC P0B22?

Faulty Hybrid Battery Pack
Hybrid Battery Pack harness is open or shorted
Hybrid Battery Pack circuit poor electrical connection

How to Fix the DTC P0B22?

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 P0B22 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 P0B22 Code

1. What does the OBDII code P0B22 mean?

P0B22 indicates an intermittent or erratic issue in the Hybrid Battery Pack Voltage Sense 'D' Circuit, which monitors the voltage of a specific section of the hybrid battery.

2. What are the common symptoms of code P0B22?

Symptoms may include the check engine light or hybrid warning light turning on, decreased fuel efficiency, reduced hybrid power, or the vehicle entering limp mode.

3. What causes the P0B22 code to appear?

The code is commonly caused by loose or corroded battery connections, a faulty voltage sensor, damaged wiring, or a malfunction in the hybrid battery control module.

4. Can I drive my car with a P0B22 code?

Driving with this code is not recommended, as it may lead to further damage to the hybrid battery system or reduced vehicle performance.

5. How is the P0B22 code diagnosed?

A technician will use a scan tool to check for related codes, inspect the battery voltage sensor and its wiring, and test the hybrid battery control module for proper operation.

6. What repairs can fix a P0B22 code?

Repairs may include cleaning or tightening battery connections, replacing a defective voltage sensor, repairing damaged wiring, or replacing the hybrid battery control module if necessary.

7. How much does it cost to repair a P0B22 code?

Repair costs can vary widely but typically range from $200 to $1,500 depending on whether the issue is with wiring, sensors, or the hybrid battery control module.

8. Can a weak hybrid battery cause the P0B22 code?

Yes, a weak or failing hybrid battery can cause erratic voltage readings, potentially triggering this code.

9. How can I prevent the P0B22 code from returning?

Regularly inspect and maintain the hybrid battery system, including checking for corrosion, securing all connections, and ensuring proper battery cooling.

10. Does the P0B22 code always mean the hybrid battery is failing?

Not always. While it could indicate a problem with the battery, it might also stem from sensor issues, wiring faults, or a control module malfunction.