U068B — Lost Communication With Turbocharger/Supercharger Inlet Pressure Sensor A

What Does U068B Mean?

U068B is a diagnostic trouble code indicating: Lost Communication With Turbocharger/Supercharger Inlet Pressure Sensor A. 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 U068B

⚠️ Check Engine Light (MIL) illuminated
⚠️ No communication with Turbocharger/Supercharger Inlet Pressure Sensor A
⚠️ Multiple warning lights may illuminate simultaneously
⚠️ Related system completely inoperative
⚠️ System warning light illuminated

Common Causes

🔍 CAN bus wiring fault (open or shorted) to Turbocharger/Supercharger Inlet Pressure Sensor A
🔍 Power or ground supply issue to Turbocharger/Supercharger Inlet Pressure Sensor A
🔍 Turbocharger/Supercharger Inlet Pressure Sensor A internal failure
🔍 Water intrusion damaging module or connectors
🔍 CAN bus termination resistor fault

Frequently Asked Questions

What does U068B mean?

U068B indicates: Lost Communication With Turbocharger/Supercharger Inlet Pressure Sensor A. The vehicle's computer has detected that the Turbocharger/Supercharger Inlet Pressure Sensor A is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code U068B?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with U068B for extended periods may cause additional problems.

How much does it cost to fix U068B?

Repair costs for U068B 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 Turbocharger/Supercharger Inlet Pressure Sensor A for damage
🔧 Check power and ground supply to Turbocharger/Supercharger Inlet Pressure Sensor A
🔧 Replace failed Turbocharger/Supercharger Inlet Pressure Sensor A

1
Find your vehicle above
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2
Check for recalls
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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.

U068B: Lost Communication With Turbocharger/Supercharger Inlet Pressure Sensor A