B2101low severityBody
Daytime Running Light Module Circuit
on 2007 Cadillac SRX 3.6L V6 · AWD
What this code means
Malfunction in the daytime running light (DRL) module or circuit.
Symptoms
- DRLs not illuminating
- DRLs always on even with headlights on
- DRL brightness incorrect
- DRL warning message on display
Common causes
- Faulty DRL module
- Burnt out DRL bulb/LED
- Wiring issue
- BCM DRL output fault
- Light sensor input error
Diagnostic steps
- Check DRL bulbs/LEDs
- Test DRL module power and ground
- Inspect wiring
- Scan BCM for DRL codes
- Test light sensor input
Repair notes
Replace DRL bulbs/LEDs or DRL control module.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0005
Driver Knee Airbag Deployment Circuit