Immobilizer Key Count Exceeded
2020-2024 Citroën C4 Electric 🇩🇪
Description
The maximum number of keys programmed to the immobilizer system has been exceeded or the key count is invalid.
Symptoms
- Cannot program additional keys
- Security light on
- Key programming procedure fails
Common Causes
- All key slots used
- Immobilizer memory error
- Unauthorized key programming attempt detected
- Module requires reset
Diagnostic Steps
- Check number of keys programmed
- Attempt key count reset procedure
- Scan immobilizer for stored key data
- Verify key programming with dealer tool
Repair Notes
Use dealer tool to reset key count and reprogram all valid keys.
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
B0105 on Other Vehicles
Citroën Ami
2020-2025 Electric 5.5kWh
Citroën Berlingo
2018-2024 1.2L I3 PureTech
Citroën Berlingo
2018-2024 1.5L I4 BlueHDi
Citroën Berlingo
2018-2025 1.2L I3 Turbo PureTech 110
Citroën Berlingo
2018-2025 1.5L I4 Diesel BlueHDi 100
Citroën Berlingo
2021-2025 Electric e-Berlingo 50kWh
Citroën Berlingo III FR
2018-2025 1.2L I3 Turbo PureTech 110
Citroën Berlingo III FR
2018-2025 1.5L I4 Diesel BlueHDi 100
Common Questions
What does code B0105 mean on a 2020-2024 Citroën C4?
B0105 stands for "Immobilizer Key Count Exceeded". The maximum number of keys programmed to the immobilizer system has been exceeded or the key count is invalid.
What are the symptoms of B0105 on a Citroën C4?
Common symptoms of B0105 include: Cannot program additional keys, Security light on, Key programming procedure fails.
What causes B0105 on a 2020-2024 Citroën C4?
Common causes of B0105 include: All key slots used, Immobilizer memory error, Unauthorized key programming attempt detected, Module requires reset.