Possible cause of fault
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 Porsche Boxster, 2003 Porsche Boxster, 2002 Porsche Boxster, 2001 Porsche Boxster, and 2000 Porsche Boxster. However, it is still accessible from the selected car via links, so may be relevant.
- Short circuit between the two CAN leads (CAN-high and CAN-low)
- Short circuit between CAN-high (drive) and ground
- Short circuit between CAN-low (drive) and voltage
- A faulty control unit connected to CAN drive bus
NOTE:
- The CAN drive bus is connected to the following control units:
- DME
- Tiptronic
- PSM and steering angle sensor
- Instrument cluster
NOTE:
The plug connections of control units connected to the CAN drive bus are disconnected for trouble shooting. This has the effect that additional CAN relevant fault codes such as 9110 DME control unit are stored in the fault memory of the instrument cluster. These fault codes should be initially ignored and should be deleted on completion of the troubleshooting.