U0674
Lost Communication With Wastegate Position Sensor B
U0674 is an OBD-II diagnostic trouble code meaning: Lost Communication With Wastegate Position Sensor B. Common causes: open or short circuit in the sensor circuit, turbine position sensor malfunction. Estimated repair cost: $28–89.
Symptoms
- Reduced engine power
- Check Engine light comes on
- Dips during acceleration
- Increased fuel consumption
- Turbocharging is unstable
Causes
- Open or short circuit in the sensor circuit
- Turbine position sensor malfunction
- Connector problems or contact corrosion
- Engine ECU malfunction
- Wiring harness damage
How to Fix
- Check the integrity of the sensor circuit
- Inspect connectors and contacts for corrosion
- Check the resistance of the turbine position sensor
- Scan the ECU for additional errors
- Replace the turbine position sensor if necessary
Related codes
Error U0674 by Vehicle Brand
FAQ
What does the U0674 code mean?
U0674 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Wastegate Position Sensor B
What causes a U0674 error code?
The most common causes of U0674 include: Open or short circuit in the sensor circuit; Turbine position sensor malfunction; Connector problems or contact corrosion; Engine ECU malfunction.
How do I fix a U0674 diagnostic trouble code?
To fix U0674: Check the integrity of the sensor circuit. Inspect connectors and contacts for corrosion. Check the resistance of the turbine position sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0674?
Limited driving only, diagnose soon
How much does it cost to fix U0674?
The estimated repair cost for U0674 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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