AutoCodes – Chevrolet – P0B11 Chevrolet

P0B11 Chevrolet Code - Hybrid/EV Battery High Resolution Current Sensor Circuit High Voltage

Quick Answer

The hybrid/EV battery current sensor is mounted inside the hybrid/EV battery pack. Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy Control Module 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: P0B11 Chevrolet indicates Hybrid/EV Battery High Resolution Current Sensor Circuit High Voltage.
Common causes: Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy Control Module 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 976

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 Apr 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B11 Chevrolet Description

The hybrid/EV battery current sensor is mounted inside the hybrid/EV battery pack. The positive high voltage cable that goes to the positive contactor relay passes through the hybrid/EV battery pack current sensor. The hybrid/EV battery pack current sensor detects the amperage that flows in and out of the hybrid/EV batteries. The battery energy control module supplies and monitors a 5 V reference signal to the hybrid/EV battery pack current sensor. The hybrid/EV battery pack current sensor returns a signal between 0 and 5 V to the battery energy control module. The hybrid/EV battery pack current sensor signal is in proportion to the amperage going in and out of the hybrid/EV battery pack. A signal voltage of the hybrid/EV battery pack current sensor greater than 2.5 V indicates that the hybrid/EV battery is being charged and a signal voltage less than 2.5 V indicates discharging. The hybrid/EV battery pack current sensor has 2 measurement ranges in order to maintain accuracy. The ranges are low resolution and high resolution. The measurement ranges of the hybrid/EV battery pack current sensor have some overlap with each other. The high resolution measures from -23 to +23 A. The low resolution measures from -470 to +280 A.

OBDII Code P0B11 Chevrolet - Hybrid/EV Battery High Resolution Current Sensor Circuit High Voltage - AutoCodes.com — P0B11 Chevrolet Code - Hybrid/EV Battery High Resolution Current Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B11 Chevrolet?

Faulty Battery Energy Control Module
Battery Energy Control Module harness is open or shorted
Battery Energy Control Module circuit poor electrical connection

How to Fix the DTC P0B11 Chevrolet?

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 P0B11 Chevrolet 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 P0B11 Chevrolet Code

1. What does the OBDII code P0B11 mean on a Chevrolet vehicle?

P0B11 indicates that the Hybrid/EV Battery High Resolution Current Sensor Circuit is detecting a high voltage condition, which could signal an issue with the sensor or the associated circuitry.

2. What are the common symptoms of the P0B11 code in a Chevrolet?

Symptoms may include reduced hybrid/EV performance, a lit Check Engine Light, decreased fuel efficiency, or limited power from the hybrid/EV battery.

3. What causes the P0B11 code to appear?

Common causes include a malfunctioning high-resolution current sensor, damaged wiring or connectors in the sensor circuit, or a fault in the hybrid/EV battery control module.

4. Can I drive my Chevrolet with the P0B11 code active?

Itâ€™s not recommended to drive with this code active, as it may lead to reduced performance or further damage to the hybrid/EV system.

5. How is the P0B11 code diagnosed?

A technician will inspect the high-resolution current sensor, check the wiring and connectors for damage, and use a diagnostic scanner to monitor data from the hybrid/EV battery system.

6. How do I fix the P0B11 code on my Chevrolet?

Repairs may include replacing the high-resolution current sensor, repairing or replacing damaged wiring, or reprogramming/updating the hybrid battery control module if needed.

7. Is the P0B11 code specific to Chevrolet vehicles?

While P0B11 is a generic code applicable to many makes and models, the specific diagnosis and repair steps may vary for Chevrolet vehicles.

8. How much does it cost to repair the P0B11 code on a Chevrolet?

Repair costs can vary widely, from $100 for minor wiring fixes to over $500 if the current sensor or control module needs replacement.

9. Can a dead hybrid/EV battery cause the P0B11 code?

A failing or damaged hybrid/EV battery could contribute to this code, but the root cause is typically related to the current sensor or its circuitry.

10. Does the P0B11 code require reprogramming the control module?

In some cases, updating or reprogramming the hybrid/EV battery control module may be necessary if the issue is related to software or module communication errors.