Fault Code 42

Alarm system I32; 148

Fault code 42

Wrong key or wrong transponder pill

Diagnostic conditions
- Ignition on

Possible cause of fault
- Wrong transponder - not adapted to the vehicle
- Short circuit to ground/voltage or open circuit in the wiring between the signal converter and the alarm system control module

Affected terminals
Plug A, pins 3 and 4

Diagnosis/troubleshooting

Part 1:

Part 2: