U066B

Lost Communication With Turbocharger/Supercharger Bypass Valve B Position Sensor

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–89 (est.)

Symptoms

Reduced engine power
Increased fuel consumption
Unstable turbocharging operation
Check Engine Light Is On
Possible transition to emergency mode

Causes

Bypass valve position sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Wiring Harness Problems
Engine control unit malfunction

How to Fix

Check the integrity of the sensor circuit
Inspect connectors and contacts for corrosion or damage
Check the functionality of the position sensor
Replace the faulty sensor if necessary
Check and replace wiring harness if necessary

Related codes

U066A U066C P2263