B0101high severityBody
Immobilizer Transponder Signal Not Detected
on 2016 Chevrolet Impala 2.5L I4 Ecotec · AWD
What this code means
The immobilizer system cannot detect the transponder signal from the key. The engine will not start.
Symptoms
- Engine cranks but will not start
- Security light flashing
- Key symbol on dashboard
- No-start condition
Common causes
- Dead key battery (smart key)
- Faulty transponder chip in key
- Damaged antenna ring around ignition
- Interference from other transponder keys
- Key handle cracked exposing transponder to damage
Diagnostic steps
- Try different registered key
- Hold key closer to ignition/start button
- Check for key battery (if applicable)
- Test antenna ring with known-good key
- Scan immobilizer codes
Repair notes
Replace key battery or have new key programmed. Replace antenna ring if faulty.
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