B0620low severityBody
Interior Temperature Sensor Circuit
on 1997 Toyota 4Runner 3.0L V6 · 4WD
What this code means
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.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open
B0012
Driver Side Airbag Deployment Circuit Short to Ground
B0013
Driver Side Airbag Deployment Circuit Short to Battery