U019F: Lost Communication With Engine Coolant Pump Control Module
Severity
Medium
System
Network Communication
What Does U019F Mean?
U019F is a diagnostic trouble code indicating: Lost Communication With Engine Coolant Pump Control Module. This code relates to the network communication system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Symptoms of U019F
- ⚠️ Check Engine Light (MIL) illuminated
- ⚠️ No communication with Engine Coolant Pump Control Module
- ⚠️ Multiple warning lights may illuminate simultaneously
- ⚠️ Related system completely inoperative
- ⚠️ Multiple warning lights on dashboard
Common Causes
- 🔍 CAN bus wiring fault (open or shorted) to Engine Coolant Pump Control Module
- 🔍 Power or ground supply issue to Engine Coolant Pump Control Module
- 🔍 Engine Coolant Pump Control Module internal failure
- 🔍 Water intrusion damaging module or connectors
- 🔍 CAN bus termination resistor fault
Frequently Asked Questions
What does U019F mean?
U019F indicates: Lost Communication With Engine Coolant Pump Control Module. The vehicle's computer has detected that the Engine Coolant Pump Control Module is not operating within its expected parameters and stored this diagnostic trouble code.
Can I drive with code U019F?
You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with U019F for extended periods may cause additional problems.
How much does it cost to fix U019F?
Repair costs for U019F typically range from $80 to $1200, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.
What To Do Next
Possible Fixes
- 🔧 Inspect CAN bus wiring to Engine Coolant Pump Control Module for damage
- 🔧 Check power and ground supply to Engine Coolant Pump Control Module
- 🔧 Replace failed Engine Coolant Pump Control Module
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.
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