AutoCodes – GMC – P10BF GMC

P10BF GMC Code - Engine Coolant Bypass Valve Secondary Command Signal Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Engine Coolant Bypass Valve, Engine Coolant Bypass Valve harness is open or shorted, Engine Coolant Bypass Valve 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: P10BF GMC indicates Engine Coolant Bypass Valve Secondary Command Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Engine Coolant Bypass Valve, Engine Coolant Bypass Valve harness is open or shorted, Engine Coolant Bypass Valve 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 410

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 Sep 26, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P10BF GMC Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Engine Coolant Bypass Valve Secondary Command Signal Message Counter is Incorrect.

OBDII Code P10BF GMC - Engine Coolant Bypass Valve Secondary Command Signal Message Counter Incorrect - AutoCodes.com — P10BF GMC Code - Engine Coolant Bypass Valve Secondary Command Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P10BF GMC?

Faulty Engine Coolant Bypass Valve
Engine Coolant Bypass Valve harness is open or shorted
Engine Coolant Bypass Valve circuit poor electrical connection

How to Fix the DTC P10BF GMC?

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 P10BF GMC 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.

Need more information about the P10BF GMC code?

Need more information on how to fix the P10BF GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P10BF GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P10BF 2014 GMC Sierra — Engine Coolant Bypass Valve Secondary Command Signal Message Counter Incorrect
P10BF 2015 GMC Sierra — Engine Coolant Bypass Valve Secondary Command Signal Message Counter Incorrect
P10BF 2016 GMC Sierra — Engine Coolant Bypass Valve Secondary Command Signal Message Counter Incorrect
P10BF 2017 GMC Sierra — Engine Coolant Bypass Valve Secondary Command Signal Message Counter Incorrect
P10BF 2018 GMC Sierra — Engine Coolant Bypass Valve Secondary Command Signal Message Counter Incorrect

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 P10BF GMC Code

1. What are the common symptoms of OBDII code P10BF GMC?

The common symptoms of code P10BF include engine overheating, poor heater performance, and potentially a check engine light.

2. What could cause the OBDII code P10BF GMC to trigger?

The code P10BF is triggered when the Engine Control Module (ECM) detects that the secondary command signal message counter from the engine coolant bypass valve is incorrect.

3. How serious is the OBDII code P10BF GMC?

Code P10BF should be addressed promptly to prevent potential engine overheating and damage. It is recommended not to ignore this code.

4. What are some possible repair tips for OBDII code P10BF GMC?

Repair tips for code P10BF may include checking the wiring and connections related to the engine coolant bypass valve, testing the valve for proper operation, and resetting the ECM.

5. Can I drive my vehicle with the OBDII code P10BF GMC?

It is not recommended to drive your vehicle with code P10BF present, as it can lead to engine overheating and potential damage. It is best to address the issue before driving.

6. How do I diagnose the OBDII code P10BF GMC?

Diagnosing code P10BF typically involves using a scan tool to retrieve the code, checking the engine coolant bypass valve for proper operation, and inspecting related wiring and connections.

7. Is it safe to continue driving if the check engine light is on due to code P10BF?

It is not safe to continue driving if the check engine light is on due to code P10BF. Continuing to drive may lead to engine overheating and further damage.

8. Can a faulty engine coolant bypass valve cause code P10BF to appear?

Yes, a faulty engine coolant bypass valve or issues related to the valve can trigger code P10BF on GMC vehicles.

9. How much does it typically cost to repair OBDII code P10BF GMC?

The cost to repair code P10BF can vary depending on the underlying issue. It may range from a simple fix like clearing the code to replacing the engine coolant bypass valve.

10. How can I prevent OBDII code P10BF GMC from appearing in the future?

To prevent code P10BF from reoccurring, it is essential to perform regular maintenance on your vehicle, including checking the cooling system components and addressing any issues promptly.