VOLVO
DIM-DF13 - CAN bus H-signal. Signal too high. Intermittent fault
System
Driver Information Module (DIM)
Volvo models this fault code applies to
Applies to the following models:
6 modelsC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S70 (1997–2000), V70 (1997–2000), V70 (2000–2008), V70 XC (1998–2000)
What does this fault code mean?
The voltage on the CAN-H wire is too high, which indicates that the wire is shorted to voltage. The fault is intermittent, meaning it has occurred before but does not always show. Because the CAN network is shared by several control modules, the fault can disturb communication between them.
Possible causes
- CAN-H wire shorted to voltage
- Fault in the instrument panel
What you can do
- 1Read off the fault codes, note them and clear them. Test drive the vehicle to see if the fault returns
- 2Follow the CAN wiring between the instrument and the central electronic module for chafing, pinched areas and loose connectors
- 3Check the connectors at the instrument and at the CAN network connections for oxidation and loose fit
- 4If you have a diagnostic tool, read which control modules respond on the CAN network and note whether any are missing
- 5If the fault remains, have a workshop investigate the CAN network, as this requires measurements in the wiring
Symptoms you may notice1
- No functions work
General guidance for car owners. Diagnosis on the car can point to a different cause.