Rain/Light Sensor Circuit Malfunction
2000-2009 Volvo S80 2.9L I6 🇨🇦
Description
Malfunction in the rain and light sensor mounted on the windshield behind the rearview mirror. The sensor controls automatic wipers and headlights.
Symptoms
- Auto wipers not working
- Wipers activating in dry conditions
- Auto headlights not responding
- Rain sensor indicator flashing
Common Causes
- Faulty rain/light sensor
- Windshield replacement with incorrect glass
- Sensor lens contaminated
- Wiring to sensor damaged
- Sensor mounting gel pad deteriorated
Diagnostic Steps
- Clean sensor lens area on windshield
- Check sensor mounting and gel pad
- Verify windshield is compatible with sensor
- Test sensor output with scan tool
- Inspect wiring at rearview mirror base
Repair Notes
Replace rain/light sensor or reinstall with new gel pad. Ensure windshield has sensor-compatible coating.
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
B2AAA on Other Vehicles
Common Questions
What does code B2AAA mean on a 2000-2009 Volvo S80?
B2AAA stands for "Rain/Light Sensor Circuit Malfunction". Malfunction in the rain and light sensor mounted on the windshield behind the rearview mirror. The sensor controls automatic wipers and headlights.
What are the symptoms of B2AAA on a Volvo S80?
Common symptoms of B2AAA include: Auto wipers not working, Wipers activating in dry conditions, Auto headlights not responding, Rain sensor indicator flashing.
What causes B2AAA on a 2000-2009 Volvo S80?
Common causes of B2AAA include: Faulty rain/light sensor, Windshield replacement with incorrect glass, Sensor lens contaminated, Wiring to sensor damaged, Sensor mounting gel pad deteriorated.