AutoCodes – GMC – P00B7 GMC

P00B7 GMC Code - Engine Coolant Flow Low/Performance

Quick Answer

The Powertrain Control Module (PCM) monitors the Engine Coolant Flow. Common causes include Faulty thermostat (stuck closed), Low engine coolant, Faulty Coolant temperature sensor. 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: P00B7 GMC indicates Engine Coolant Flow Low/Performance.
Common causes: Common causes include Faulty thermostat (stuck closed), Low engine coolant, Faulty Coolant temperature sensor.
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 4,300

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 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P00B7 GMC Description

The Powertrain Control Module (PCM) monitors the Engine Coolant Flow. The PCM sets the OBDII code when the Engine Coolant Flow is out of factory specifications.

OBDII Code P00B7 GMC - Engine Coolant Flow Low/Performance - AutoCodes.com — P00B7 GMC Code - Engine Coolant Flow Low/Performance

What does this mean?

What are the Possible Causes of the DTC P00B7 GMC?

Faulty thermostat (stuck closed)
Low engine coolant
Faulty Coolant temperature sensor

How to Fix the DTC P00B7 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 P00B7 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 P00B7 GMC code?

Need more information on how to fix the P00B7 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P00B7 GMC 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 P00B7 GMC Code

1. What are common symptoms of OBDII code P00B7 GMC?

- Common symptoms include engine overheating, reduced engine performance, and the illumination of the check engine light.

2. What does OBDII code P00B7 GMC indicate?

- This code indicates that there is a low engine coolant flow or performance issue.

3. What are the possible causes of OBDII code P00B7 GMC?

- Possible causes include a faulty thermostat, a clogged radiator, a malfunctioning water pump, or a blocked coolant passage.

4. How can I diagnose the cause of OBDII code P00B7 GMC?

- Diagnose the code by checking the coolant level, inspecting the cooling system components for leaks or blockages, and testing the thermostat and water pump.

5. How can I repair OBDII code P00B7 GMC?

- Repair options may include replacing the thermostat, flushing the cooling system, cleaning or replacing the radiator, or addressing any other identified issues in the cooling system.

6. Can driving with OBDII code P00B7 GMC harm my vehicle?

- Continuing to drive with this code can potentially lead to engine overheating, which may cause serious damage to the engine components.

7. How urgent is it to address OBDII code P00B7 GMC?

- It is important to address this code promptly to prevent potential engine damage and ensure the vehicle operates safely and efficiently.

8. Can I reset OBDII code P00B7 GMC by disconnecting the battery?

- While disconnecting the battery may clear the code temporarily, it is recommended to diagnose and address the underlying issue to prevent the code from reoccurring.

9. Will OBDII code P00B7 GMC prevent my vehicle from passing an emissions test?

- Yes, this code can cause your vehicle to fail an emissions test due to the impact on engine performance and emissions control systems.

10. How can I prevent OBDII code P00B7 GMC from occurring in the future?

- To prevent this code, maintain regular coolant system maintenance, address cooling system issues promptly, and follow your vehicle's recommended maintenance schedule.