CAN Error Check Connection on Ioniq 5 2022 with Hyundai Q harness

[jimmy4345]

Describe the bug

I have successfully installed the comma 3X with Hyundai Q harness on my Ioniq 5 2022 (no HDA 1 or 2 or 1.5) in Taiwan, Asia. After installed the stock openpilot (release3), it starts the calibration process.
However, in a sudden then said, “CAN ERROR check connections”.

I have checked all the cables several times. The device is new and undamaged.
I also test different branch like OP 0.9.6, 0.9.7 master-ci, every now and then I get the same error.

Which car does this affect?

Ioniq 5 2022 (no HDA 1 or 2 or 1.5)

Provide a route where the issue occurs

2024-09-20 08:53:09 | 57a2cea2bca4571d/00000004--8878429e70

openpilot version

0.9.7

Additional info

I have used some tools to concern if the CAN message is responding from car with Hyundai Q harness and yes it has the CAN-FD signal. (Using PCAN-USB)
I have tried to ssh in my device and when I implement the data/openpilot/panda/tests/can_printer.py, well start printing message and the status “CAN ERROR check connections” back to calibration process! But if I cancel the process then it came back to “CAN ERROR check connections”. (sometime work, sometime still maintain “CAN ERROR check connections”)

Also I have check the fw, although it shows Hyundai_Ioniq_5, but the fuzzy is true. ('fuzzyFingerprint': True)
I used "fingerprint_from_route.py" on openpilot and got the fingerprint
" b'\xf1\x00NE1 MFC AT EUR LHD 1.00 1.02 99211-GI010 211206' "
which is not matching any other in Ecu.fwdCamera shows below (Ecu.fwdRadar are the same)

There is only the LHD & RHD different.
Do I need to port it or any possible reason for “CAN ERROR check connections” or what I can do?
Is it possible the OBD-C cable problem?

[jimmy4345]

Sorry for the mistake close.

This issue has discussed at discord Hyundai-kia-genesis channel in "2022 Ioniq 5" thread.
It seems to flip the wires, and everything were fine.
However, since I flipped the wires on Q harness (According to the CAR.md), that means openpilot is "not directly" supported.
Is this still need to be check?

[Doro0]

Hi jimmy I had the same problem. I switched out the harness with k and it work flawless. Plus you don’t even need to plug in the OBD Power harness.