U066B
Lost Communication With Turbocharger/Supercharger Bypass Valve B Position Sensor
U066B is an OBD-II diagnostic trouble code meaning: Lost Communication With Turbocharger/Supercharger Bypass Valve B Position Sensor. Common causes: bypass valve position sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $33–89.
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
Error U066B by Vehicle Brand
FAQ
What does the U066B code mean?
U066B is an OBD-II diagnostic trouble code that indicates: Lost Communication With Turbocharger/Supercharger Bypass Valve B Position Sensor
What causes a U066B error code?
The most common causes of U066B include: Bypass valve position sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Wiring Harness Problems.
How do I fix a U066B diagnostic trouble code?
To fix U066B: Check the integrity of the sensor circuit. Inspect connectors and contacts for corrosion or damage. Check the functionality of the position sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U066B?
Yes, but get it checked soon
How much does it cost to fix U066B?
The estimated repair cost for U066B is $33–89. Actual cost depends on your vehicle, location, and labor rates.
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