2014 Chevy Cruze P00B7 Engine Coolant Thermostat

2014 Chevy Cruze


  • 1.4L ECOTEC Turbocharged Inline-4 Engine
  • Horsepower: Approximately 138 hp
  • Torque: Approximately 148 lb-ft


  • 6-speed automatic transmission

Fuel Economy:

  • The EPA estimated fuel economy is around 26-28 MPG city and 36-39 MPG highway.

Troubleshooting and Resolving P00B7 Code on a 2014 Chevy Cruze

If you’re an owner of the 2014 Chevy Cruze with the 1.4L engine, you might have encountered the P00B7 diagnostic trouble code (DTC) at some point. Don’t worry, though – we’re here to shed light on what this code means and how you can address it effectively. The P00B7 code is specifically related to the Engine Coolant Flow Performance, and it usually indicates a problem with the thermostat and the engine’s cooling system. Let’s delve into the details and explore the steps to diagnose and resolve this issue.

What Does P00B7 Mean?

The P00B7 code is a diagnostic trouble code (DTC) that gets triggered when the Engine Control Module (ECM) detects that the coolant flow in the engine is not within the expected range. In simpler terms, it suggests that there might be an issue with the thermostat or the components associated with the cooling system. This can result in inefficient engine temperature regulation, potentially affecting engine performance and fuel efficiency.


Common Causes of P00B7 on a 2014 Chevy Cruze:

  • Faulty Thermostat: A malfunctioning thermostat might not open and close as it should, leading to improper coolant flow and temperature regulation.

A vehicle’s Thermostat plays a crucial role in maintaining optimal engine temperature and overall performance. It remains closed when the engine is cold, allowing it to quickly warm up for efficient combustion. Once the engine reaches the designated temperature, the thermostat opens, permitting coolant circulation to cool down the engine and prevent overheating.

  • Coolant Leaks: Leaks in the cooling system can cause coolant levels to drop, leading to poor circulation and erratic temperature control.
  • Cooling System Blockages: Accumulation of debris, rust, or sediment within the cooling system can impede proper coolant flow and result in temperature irregularities.
  • Electrical Issues: Wiring problems or a malfunctioning engine coolant temperature sensor can cause inaccurate readings, triggering the P00B7 code.

Diagnosis and Resolution:

  1. Check Coolant Levels: Ensure that the coolant levels are within the recommended range. If low, top up the coolant to the appropriate level.
  2. Inspect for Leaks: Carefully examine the cooling system for any visible leaks. If you find any, address them promptly.
  3. Thermostat Inspection: Test the thermostat to ensure it opens and closes correctly. A faulty thermostat should be replaced.
  4. Cooling System Flush: If there are signs of blockages or debris in the cooling system, consider performing a cooling system flush to remove any obstructions.
  5. Check Wiring and Sensors: Inspect the wiring and connections related to the engine coolant temperature sensor. Replace any damaged components.
  6. Professional Diagnostic Scan: If the issue persists, it’s advisable to visit a trusted mechanic for a comprehensive diagnostic scan. They can use specialized tools to pinpoint the exact cause of the P00B7 code.

The P00B7 code on a 2014 Chevy Cruze is an indication of a potential issue within the engine’s cooling system. While car owners can perform some simple checks and fixes, addressing this problem promptly is important to prevent further damage to the engine. If you’re not comfortable diagnosing or repairing the issue yourself, seeking the assistance of a qualified Chevy mechanic is recommended. Regular maintenance and timely repairs can help keep your Chevy Cruze running smoothly and efficiently for years to come.

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