DTC Detection Logic
WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.
| DTC No. |
CONSULT screen terms
(Trouble diagnosis content) |
DTC detecting condition |
| P31B1 |
COMMUNICATION ERROR
(Communication error) |
When HPCM is not transmitting or receiving CAN communication signal with AWD control unit. |