AutoCodes – Generic – P0B2B

P0B2B Code - Hybrid Battery 'C' Voltage

Quick Answer

The Engine Control Module (ECM) monitors the Hybrid Battery 'C' Voltage 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: P0B2B indicates Hybrid Battery 'C' Voltage.
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 1,621

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
Comments
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Code P0B2B Description

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

OBDII Code P0B2B - Hybrid Battery 'C' Voltage - AutoCodes.com — P0B2B Code - Hybrid Battery 'C' Voltage

What does this mean?

What are the Possible Causes of the DTC P0B2B?

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

How to Fix the DTC P0B2B?

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 P0B2B 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.