U02AF — Lost Communication With Turbocharger Turbine Inlet Valve Position Sensor

What Does U02AF Mean?

U02AF is a diagnostic trouble code indicating: Lost Communication With Turbocharger Turbine Inlet Valve Position Sensor. This code relates to the manufacturer-specific network system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of U02AF

⚠️ Check Engine Light (MIL) illuminated
⚠️ No communication with Turbocharger Turbine Inlet Valve Position Sensor
⚠️ 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 Turbocharger Turbine Inlet Valve Position Sensor
🔍 Power or ground supply issue to Turbocharger Turbine Inlet Valve Position Sensor
🔍 Turbocharger Turbine Inlet Valve Position Sensor internal failure
🔍 Water intrusion damaging module or connectors
🔍 CAN bus termination resistor fault

Frequently Asked Questions

What does U02AF mean?

U02AF indicates: Lost Communication With Turbocharger Turbine Inlet Valve Position Sensor. The vehicle's computer has detected that the Turbocharger Turbine Inlet Valve Position Sensor is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code U02AF?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with U02AF for extended periods may cause additional problems.

How much does it cost to fix U02AF?

Repair costs for U02AF 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 Turbocharger Turbine Inlet Valve Position Sensor for damage
🔧 Check power and ground supply to Turbocharger Turbine Inlet Valve Position Sensor
🔧 Replace failed Turbocharger Turbine Inlet Valve Position Sensor

1
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2
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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.

U02AF: Lost Communication With Turbocharger Turbine Inlet Valve Position Sensor