U0672 Code - Lost Communication With Engine Coolant Pump
Quick Answer
The U0672 diagnostic trouble code (DTC) indicates that the vehicle's engine control module (ECM) has lost communication with the engine coolant pump control module. Common causes include Faulty engine coolant pump control module, Wiring issues or loose connections, Malfunctioning 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
- U0672 indicates Lost Communication With Engine Coolant Pump.
- Common causes
- Common causes include Faulty engine coolant pump control module, Wiring issues or loose connections, Malfunctioning 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 U0672 Description
The U0672 diagnostic trouble code (DTC) indicates that the vehicle's engine control module (ECM) has lost communication with the engine coolant pump control module. The engine coolant pump is responsible for circulating coolant through the engine to maintain optimal operating temperatures. When communication between the ECM and coolant pump control module is disrupted, it can lead to improper coolant flow and potentially cause the engine to overheat.
Common Causes of U0672
- Faulty engine coolant pump control module
- Wiring issues or loose connections
- Malfunctioning coolant temperature sensor
- ECM software or hardware issues
- Water pump failure
Symptoms of U0672
- Engine overheating
- Reduced engine performance
- Check engine light illuminated
- Inability to start the engine
- Loss of coolant
How to Fix U0672
- Conduct a thorough inspection of the wiring and connections between the ECM and the engine coolant pump control module.
- Test the engine coolant pump control module for proper operation and replace if necessary.
- Check the coolant temperature sensor for proper function and replace if faulty.
- Perform a diagnostic scan to identify any ECM software or hardware issues and address them accordingly.
- Inspect the water pump for any signs of failure and replace if needed.
Cost to Fix U0672
The cost of repairing a lost communication issue with the engine coolant pump can vary depending on the specific cause of the problem and the vehicle's make and model. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. It is important to note that diagnostic time and labor rates at auto repair shops can vary, so it is recommended to obtain quotes from multiple shops to determine the most cost-effective option.
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Code U0672 Information for Specific Makes
- U0672 Buick — Lost Communication With Engine Coolant Pump
- U0672 Cadillac — Lost Communication With Engine Coolant Pump
- U0672 Chevrolet — Lost Communication With Engine Coolant Pump
- U0672 GMC — Lost Communication With Engine Coolant Pump
Frequently Asked Questions about U0672 Code
1. What are common symptoms of OBDII code U0672 (Lost Communication With Engine Coolant Pump)?
- Common symptoms include engine overheating, coolant pump not functioning properly, and dashboard warning lights illuminated.
2. What are possible causes of OBDII code U0672?
- Possible causes may include a malfunctioning engine coolant pump, wiring issues, loose connections, or a faulty control module.
3. How can I diagnose the reason behind OBDII code U0672?
- Diagnose the code by checking the engine coolant pump for proper operation, inspecting the wiring and connections for any damage, and using a diagnostic scanner to read the code.
4. Can a DIY enthusiast repair OBDII code U0672 at home?
- While basic checks like inspecting connections can be done at home, diagnosing and repairing the root cause of the code may require professional assistance.
5. Is it safe to continue driving with OBDII code U0672 active?
- It is not recommended to drive with this code active, as it can lead to engine overheating and potential damage if the coolant pump is not functioning correctly.
6. How much does it typically cost to repair OBDII code U0672?
- The cost of repairing this code can vary depending on the cause. It may range from a simple fix like reconnecting a loose wire to replacing the engine coolant pump.
7. Can resetting the OBDII system clear code U0672?
- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.
8. Are there any preventive maintenance tips to avoid OBDII code U0672?
- Regularly inspecting the engine coolant pump, checking wiring connections, and maintaining the cooling system can help prevent issues that trigger this code.
9. Can a malfunctioning engine coolant pump cause other problems besides code U0672?
- Yes, a malfunctioning engine coolant pump can lead to engine overheating, poor coolant circulation, and potential damage to engine components if not addressed promptly.
10. How long does it take to repair OBDII code U0672?
- The repair time for this code can vary depending on the exact cause. Simple fixes may take a short time, while more complex issues may require more extensive repairs and diagnostics.
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