B1340
Left Air Temperature Actuator
B1340 is an OBD-II diagnostic trouble code meaning: Left Air Temperature Actuator. Common causes: open or short circuit in control circuit, jamming of the damper mechanism. Estimated repair cost: $56–167.
Symptoms
- Uneven temperature distribution in the cabin
- Inability to adjust temperature on the left side
- Noise or grinding noise from the ventilation system
Causes
- Open or short circuit in control circuit
- Jamming of the damper mechanism
- Actuator motor malfunction
- Poor contact in connectors
- Planetary Control Module malfunction
How to Fix
- Check fault codes in the climate control system
- Check the integrity of the wiring harness to the actuator
- Check the operation of the mechanism manually (if possible)
- Measure the resistance of the motor winding
- If jamming is necessary, try to clean the mechanism
- If necessary, replace the actuator
- Reset the error and check the system operation
Related codes
FAQ
What does the B1340 code mean?
B1340 is an OBD-II diagnostic trouble code that indicates: Left Air Temperature Actuator
What causes a B1340 error code?
The most common causes of B1340 include: Open or short circuit in control circuit; Jamming of the damper mechanism; Actuator motor malfunction; Poor contact in connectors.
How do I fix a B1340 diagnostic trouble code?
To fix B1340: Check fault codes in the climate control system. Check the integrity of the wiring harness to the actuator. Check the operation of the mechanism manually (if possible). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1340?
Yes, but get it checked soon
How much does it cost to fix B1340?
The estimated repair cost for B1340 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat