Interior Temperature Sensor Circuit
2010-2021 Fiat Uno 1.0L I4 Flex Fire Evo
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
- B0009Rear Center Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
B0620 on Other Vehicles
Fiat 124 Spider
2017-2020 1.4L I4 Turbo
Fiat 126p Maluch
1973-2000 0.65L I2 Air-Cooled
Fiat 126p Maluch
1987-2000 0.7L I2 Air-Cooled
Fiat 500
2012-2019 1.4L I4
Fiat 500 Abarth
2012-2019 1.4L I4 Turbo
Fiat 500 BR
2011-2020 1.4L I4 Flex Fire Evo
Fiat 500 PL
2007-2025 1.0L I3 Hybrid FireFly 70
Fiat 500 PL
2007-2025 1.2L I4 Fire 69
Common Questions
What does code B0620 mean on a 2010-2021 Fiat Uno?
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 Fiat Uno?
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 2010-2021 Fiat Uno?
Common causes of B0620 include: Faulty in-car temperature sensor, Aspirator tube blocked or disconnected, Sensor wiring issue, Aspirator fan motor failure.