VOLVO
DIM-DF15 - CAN bus H signal. Signal too low. 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)
Show models by year and engine (8)
- Volvo C70 Cabriolet (1998–2005)1999, 2001–2005
- Volvo C70 Cabriolet (1998–2005)2000All engines except: B5244S, B5244T · Transmission M56 only
- Volvo C70 Coupé (1998–2002)1999, 2001–2002
- Volvo C70 Coupé (1998–2002)2000All engines except: B5244S, B5244T · Transmission M56 only
- Volvo S70 (1997–2000)1999–2000
- Volvo V70 (1997–2000)1999–2000
- Volvo V70 (2000–2008)2000All engines except: D5252T MSA 15.8
- Volvo V70 XC (1998–2000)1999–2000
What does this fault code mean?
The voltage on the CAN-H wire is too low, which indicates that the wire is shorted to ground. 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 ground
- 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-H wire for chafing, pinched areas and places where it may have touched the body
- 3Use a multimeter to confirm the CAN-H wire has no contact with ground (body)
- 4Check the connectors at the instrument for oxidation and loose fit
- 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.