B0620
Interior Temperature Sensor Circuit
2002-2005 Audi A4 3.0L V6 🇨🇦
Low SeverityBody
Description
Malfunction in the interior (in-car) temperature sensor used by the automatic climate control system.
Symptoms
- Climate control not maintaining set temperature
- Auto mode blowing wrong temperature
- Temperature fluctuates wildly
- Aspirator fan not running
Common Causes
- Faulty in-car temperature sensor
- Aspirator tube blocked or disconnected
- Sensor wiring issue
- Aspirator fan motor failure
Diagnostic Steps
- Check in-car sensor reading on climate display
- Inspect aspirator tube for blockage
- Test sensor resistance
- Listen for aspirator fan running
- Compare sensor reading to actual cabin temp
Repair Notes
Replace in-car temperature sensor or clear aspirator tube blockage.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
B0620 on Other Vehicles
Common Questions
What does code B0620 mean on a 2002-2005 Audi A4?
B0620 stands for "Interior Temperature Sensor Circuit". Malfunction in the interior (in-car) temperature sensor used by the automatic climate control system.
What are the symptoms of B0620 on a Audi A4?
Common symptoms of B0620 include: Climate control not maintaining set temperature, Auto mode blowing wrong temperature, Temperature fluctuates wildly, Aspirator fan not running.
What causes B0620 on a 2002-2005 Audi A4?
Common causes of B0620 include: Faulty in-car temperature sensor, Aspirator tube blocked or disconnected, Sensor wiring issue, Aspirator fan motor failure.