B0111low severityBody
Keyless Entry Receiver Circuit
on 2006 Mazda Mazda3 2.0L I4 · FWD
What this code means
Malfunction in the keyless entry receiver module or its circuit. The receiver processes RF signals from the key fob.
Symptoms
- Remote lock/unlock not working
- No response from any key fob
- Physical key still works
Common causes
- Faulty receiver module
- Antenna disconnected
- Wiring damage to receiver
- Receiver power supply issue
Diagnostic steps
- Test receiver power and ground
- Check antenna connection
- Test with key fob held near receiver
- Scan for BCM codes
- Swap receiver if possible
Repair notes
Replace keyless entry receiver module or repair antenna connection.
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
B0007
Rear Left Side Airbag Deployment Circuit
B0008
Rear Right Side Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open