U0689
Lost Communication With Turbocharger/Supercharger B Temperature Sensor
U0689 is an OBD-II diagnostic trouble code meaning: Lost Communication With Turbocharger/Supercharger B Temperature Sensor. Common causes: open or short circuit in the sensor circuit, turbocharger temperature sensor malfunction. Estimated repair cost: $17–56.
Symptoms
- Check Engine Light Is On
- Possible reduction in engine power
- Disabling the turbocharging system
- Unstable engine operation
- Turbocharger overheating
Causes
- Open or short circuit in the sensor circuit
- Turbocharger temperature sensor malfunction
- Poor contact in the sensor connector
- Wiring harness damage
- Engine ECU malfunction
How to Fix
- Check the integrity of the sensor circuit
- Inspect the sensor connector for corrosion or damage.
- Check the resistance of the temperature sensor
- Replace the turbocharger temperature sensor if necessary
- Diagnose the engine ECU if the error persists
Related codes
Error U0689 by Vehicle Brand
FAQ
What does the U0689 code mean?
U0689 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Turbocharger/Supercharger B Temperature Sensor
What causes a U0689 error code?
The most common causes of U0689 include: Open or short circuit in the sensor circuit; Turbocharger temperature sensor malfunction; Poor contact in the sensor connector; Wiring harness damage.
How do I fix a U0689 diagnostic trouble code?
To fix U0689: Check the integrity of the sensor circuit. Inspect the sensor connector for corrosion or damage.. Check the resistance of the temperature sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0689?
Yes, but get it checked soon
How much does it cost to fix U0689?
The estimated repair cost for U0689 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat