AutoCodes – Saturn – P0B11 Saturn

P0B11 Saturn 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 Saturn 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 764

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

What does this mean?

What are the Possible Causes of the DTC P0B11 Saturn?

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 Saturn?

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 Saturn 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 Saturn Code

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

The P0B11 code indicates an issue with the hybrid/EV battery high-resolution current sensor circuit, specifically detecting a high voltage condition.

2. What are the common symptoms of the P0B11 code on a Saturn?

Symptoms may include an illuminated check engine light, reduced fuel efficiency, limited hybrid or EV functionality, and possible decreased overall vehicle performance.

3. What causes the P0B11 code to appear on a Saturn?

The code can be caused by a faulty high-resolution current sensor, damaged wiring or connectors in the sensor circuit, or issues with the hybrid/EV battery control module.

4. Can the P0B11 code damage my Saturn's hybrid/EV battery?

If left unresolved, the issue could potentially lead to further battery or system damage due to improper current monitoring.

5. How do I diagnose the P0B11 code on my Saturn?

Diagnosis typically involves using a scan tool to verify the code, inspecting the sensor and its wiring for damage, and testing the sensor and control module for proper operation.

6. Can I drive my Saturn with the P0B11 code active?

Driving with this code is not recommended, as it could lead to reduced performance and potential long-term damage to the hybrid/EV system.

7. How do I fix the P0B11 code on a Saturn?

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

8. Is the P0B11 code specific to Saturn hybrid/EV vehicles?

Yes, this code is specific to vehicles with hybrid or EV systems, and it refers to the high-resolution current sensor circuit in the battery system.

9. What tools are needed to troubleshoot the P0B11 code on a Saturn?

You'll need an OBDII scan tool, a multimeter for testing the circuit, and possibly manufacturer-specific diagnostic equipment for hybrid/EV systems.

10. How much does it cost to fix the P0B11 code on a Saturn?

Repair costs vary, but replacing the sensor or repairing wiring can range from $100 to $500, while replacing the control module may cost significantly more.