VOLVO
ECM-P163800 - CAN-link ECM/INSTM circuit/network. General malfunction information. No information on malfunction type
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
1 modelXC90 (2003–)
Show models by year and engine (1)
What does this fault code mean?
The fault concerns the CAN link between the engine control module (ECM) and INSTM, meaning the communication between the two modules on the CAN network. It does not state the type of fault in more detail, so the cause needs to be traced further if the fault returns.
Possible causes
- Extreme heat conditions
What you can do
- 1No specific troubleshooting exists for this code
- 2Read off the fault codes and note which are present, as other codes may give more information about the communication
- 3If the fault code returns: have a workshop check the CAN communication between the engine control module and INSTM
Symptoms you may notice1
- No noticeable symptoms for the driver
What the fault can affect1
- The electric cooling fan runs at a preset speed
General guidance for car owners. Diagnosis on the car can point to a different cause.