Vauxhall SIGNUM 1.9 CDTi ECU (Engine Management) – Part No: 55201791 / 0281012868
Common Faults:

• After a long drive the engine stops and does not start anymore.
• No communication possible with ECU / error code reading not possible.
• P0120 Throttle valve/pedal position sensor A – NA.
• P0380 Glow plug/heater circuit (A) – Circuit defective.
• Other CAN bus participants reports communication problems with the ECU.
• P0602 Control unit – Program error.
• P0103 Mass or volume air flow circuit – Signal too large.
• Other fault on request.

Part Numbers:

• Vauxhall Part Number – 55201791
• Bosch Part number – 0281012868