AutoCodes – Chevrolet – P10BF 2018 Chevrolet Silverado

P10BF 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 256

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P10BF 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado - Engine Coolant Bypass Valve Secondary Command Signal Message Counter Incorrect - AutoCodes.com — P10BF 2018 Chevrolet Silverado Code - Engine Coolant Bypass Valve Secondary Command Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P10BF 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado code?

Need more information on how to fix the P10BF 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P10BF 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 2018 Chevrolet Silverado Code

1. What does the OBDII code P10BF mean for my 2018 Chevrolet Silverado?

The code P10BF indicates an issue with the Engine Coolant Bypass Valve Secondary Command Signal, specifically that the message counter is incorrect or not aligning as expected.

2. What are the common symptoms of code P10BF on a 2018 Chevrolet Silverado?

The symptoms may include the check engine light turning on, engine overheating, reduced heater performance, or irregular engine temperature regulation.

3. What causes the P10BF code to appear?

Common causes include a faulty coolant bypass valve, wiring or connection issues in the valve circuit, a malfunctioning powertrain control module (PCM), or software glitches.

4. Can I drive my 2018 Silverado with the P10BF code active?

Driving with this code is not recommended, as it may lead to improper engine cooling, overheating, and potential engine damage if the issue is not resolved promptly.

5. How is the P10BF code diagnosed?

A technician will typically use a scan tool to confirm the code, check the coolant bypass valve operation, inspect wiring and connectors, and test for any PCM-related issues.

6. How do you fix the P10BF code on a 2018 Chevrolet Silverado?

Repairs may involve replacing the coolant bypass valve, repairing or replacing damaged wiring, cleaning or reconnecting connectors, or updating/reprogramming the PCM.

7. How much does it cost to repair the P10BF code?

Repair costs can range from $150 to $500 or more depending on whether the bypass valve, wiring, or PCM requires repair or replacement.

8. What tools are needed to troubleshoot the P10BF code?

Common tools include an OBDII scan tool, a multimeter for testing electrical circuits, and possibly a diagnostic flowchart specific to the Chevrolet Silverado.

9. Can a software update fix the P10BF code?

Yes, in some cases, a PCM software update or reprogramming may resolve the issue if it is caused by a software glitch.

10. Is the P10BF code a common issue for the 2018 Chevrolet Silverado?

While not extremely common, it can occur due to wear and tear or electrical issues in the coolant bypass valve system. Regular maintenance can help prevent it.