U0660
Lost Communication With Left Rear Temperature Actuator B
U0660 is an OBD-II diagnostic trouble code meaning: Lost Communication With Left Rear Temperature Actuator B. Common causes: open or short circuit in the sensor circuit, left rear temperature sensor b malfunction. Estimated repair cost: $17–56.
Symptoms
- Incorrect operation of climate control in the rear left zone
- Lack of response to temperature adjustment from rear panels
- Check Engine Light Illuminates
- Uneven temperature distribution in the cabin
- Climate control errors on display
Causes
- Open or short circuit in the sensor circuit
- Left Rear Temperature Sensor B Malfunction
- Poor contact in the sensor connector
- Problems with the climate control unit
- Wiring harness damage
How to Fix
- Check the integrity of the wires to the sensor
- Inspect connectors for oxidation or damage
- Check the resistance of the temperature sensor
- Scan the climate control module for other errors
- If necessary, replace the temperature sensor
Related codes
Error U0660 by Vehicle Brand
FAQ
What does the U0660 code mean?
U0660 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Left Rear Temperature Actuator B
What causes a U0660 error code?
The most common causes of U0660 include: Open or short circuit in the sensor circuit; Left Rear Temperature Sensor B Malfunction; Poor contact in the sensor connector; Problems with the climate control unit.
How do I fix a U0660 diagnostic trouble code?
To fix U0660: Check the integrity of the wires to the sensor. Inspect connectors for oxidation or damage. Check the resistance of the temperature sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0660?
Yes, but get it checked soon
How much does it cost to fix U0660?
The estimated repair cost for U0660 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat