Code B1001 reports a malfunctioning transponder. On the Fiat Ducato 2.3 Multijet it appears together with a long series of communication codes, with the central locking not responding and hard starting.
- System
- Electronics
- Component
- Ignition switch
- Fault
- Switching off the ignition and removing the key activates the daytime running lights, the radio and the alarm, with every warning light coming on and a ‘Hill holder unavailable’ message; the central locking does not respond to the remote and the vehicle is hard to start.
- Typical symptoms
-
- Removing the key activates the daytime running lights, the radio and the alarm
- Every warning light comes on
- ‘Hill holder unavailable’ message on the display
- The central locking does not respond to the remote
- The engine is hard to start
- Vehicles affected
-
- Fiat Ducato 2.3 Multijet
- Main code
-
- B1001 Malfunctioning transponder
- Related codes
-
- B1024 Antenna 4, passive entry
- B10AA Mismatch, proxy configuration error
- C1011 Battery voltage
- C1215 Brake light switch
- P068A Main relay, early closing
- U0001 CAN bus communication fault
- U0426 Auxiliary heater control module, data not received or invalid
- U1414 ECU configuration, data not received or invalid
- U1700 CAN line, body computer, signal
- U1701 CAN transmission module, engine control
- U1710 CUN line or cruise controls, connection fault
- U1712 Steering angle, C_CAN block
- U1724 Telematics control unit, LTM or ETM
- U1726 No communication with the airbag control unit
On this fault the diagnostic tool often returns several codes together.
- Solution
-
See the repair procedure verified on Sema Repair.
The cause and the repair are on Sema Repair
On Sema Repair this code is linked to verified case studies, with the confirmed cause case by case, the job step by step, indicative times, the manufacturer's notes and a photograph of the component with the point of intervention highlighted.