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U0620: Lost Communication With Exhaust Gas Temperature Sensor Bank 1 Sensor 2

What Does U0620 Mean?

U0620 is a diagnostic trouble code indicating: Lost Communication With Exhaust Gas Temperature Sensor Bank 1 Sensor 2. 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

U0615 Lost Communication With Engine Coolant Bypass Valve A U0616 Lost Communication With Engine Coolant Bypass Valve B U0617 Lost Communication With Engine Coolant Bypass Valve C U0618 Lost Communication With Engine Coolant Bypass Valve D U0619 Lost Communication With Reductant Level Sensor A U0621 Lost Communication With Exhaust Gas Temperature Sensor Bank 2 Sensor 1 U0622 Lost Communication With Exhaust Gas Temperature Sensor Bank 2 Sensor 2 U0623 Lost Communication With Coolant Pump “A”