U066F: Lost Communication With Low Pressure Fuel System Sensor
Severity
Medium
System
Vehicle Systems
What Does U066F Mean?
U066F is a diagnostic trouble code indicating: Lost Communication With Low Pressure Fuel System Sensor. This code relates to the vehicle systems system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Symptoms of U066F
- ⚠️ Check Engine Light (MIL) illuminated
- ⚠️ No communication with Low Pressure Fuel System Sensor
- ⚠️ Multiple warning lights may illuminate simultaneously
- ⚠️ Related system completely inoperative
- ⚠️ System warning light illuminated
Common Causes
- 🔍 CAN bus wiring fault (open or shorted) to Low Pressure Fuel System Sensor
- 🔍 Power or ground supply issue to Low Pressure Fuel System Sensor
- 🔍 Low Pressure Fuel System Sensor internal failure
- 🔍 Water intrusion damaging module or connectors
- 🔍 CAN bus termination resistor fault
Frequently Asked Questions
What does U066F mean?
U066F indicates: Lost Communication With Low Pressure Fuel System Sensor. The vehicle's computer has detected that the Low Pressure Fuel System Sensor is not operating within its expected parameters and stored this diagnostic trouble code.
Can I drive with code U066F?
You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with U066F for extended periods may cause additional problems.
How much does it cost to fix U066F?
Repair costs for U066F typically range from $80 to $800, 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 Low Pressure Fuel System Sensor for damage
- 🔧 Check power and ground supply to Low Pressure Fuel System Sensor
- 🔧 Replace failed Low Pressure Fuel System Sensor
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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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