🔧 FixIt

U3548: High Voltage System Interlock Circuit P High

System
Vehicle Systems

What Does U3548 Mean?

U3548 is a diagnostic trouble code indicating: High Voltage System Interlock Circuit P High. This code relates to the vehicle systems system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

What To Do Next

  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

U3543 High Voltage System Interlock Circuit O Low U3544 High Voltage System Interlock Circuit O High U3545 High Voltage System Interlock Circuit P U3546 High Voltage System Interlock Circuit P Performance U3547 High Voltage System Interlock Circuit P Low U3549 Hydrogen Tank High Pressure Sensor 1 Circuit U3550 Hydrogen Tank A Valve Control Circuit U3551 Hydrogen Tank A Valve Enable Circuit