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Michael,<br>
<br>
are you aware of these new findings by Richard Taylor?<br>
<br>
<a class="moz-txt-link-freetext" href="https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/issues/980#issuecomment-2715403436">https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/issues/980#issuecomment-2715403436</a><br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 22.03.25 um 03:26 schrieb Michael
Geddes via OvmsDev:<br>
</div>
<blockquote type="cite"
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<div dir="ltr">How are we going with this investigation?
<div><br>
</div>
<div>I've been following along mostly and have been periodically
going over the poller code trying to work out if there are any
points where there could be timing issues with long-held
mutexes (or even deadlocks). I did push up some small tweaks
recently but there was no aha! moment.</div>
<div><br>
</div>
<div>I have been working on some changes that would move forward
on the idea of building a vehicle implementation from duktape
scripts... and I had been getting some points where ovms went
berserk, kicked out the ssh session and stopped responding on
ssh http but then eventually came back (without a reset) after
some minutes. The script was simply adding a new
PollSeriesEntry which then uses the dbc decoder (with
improvements) to decode to metrics, noting that the script is
setup only and that there are no call-backs into the duktape
engine/task.</div>
<div> </div>
<div>Anyway, those patches mentioned above seem to have resolved
that issue with the hangups which is why I made the p/r.</div>
<div> </div>
<div>BTW I have been running my Ioniq5 with the latest of the
timing patches for a while now.</div>
<div><br>
</div>
<div>Because of the correlation of the bus issues with the
poller changes, I am still concerned that the poller changes
are contributing to the problem (even if not directly causing
it), so would be happy to chase down any leads people might
have. </div>
<div><br>
</div>
<div>//.ichael</div>
</div>
<br>
<div class="gmail_quote gmail_quote_container">
<div dir="ltr" class="gmail_attr">On Sat, 22 Feb 2025 at 02:52,
Chris Box via OvmsDev <<a
href="mailto:ovmsdev@lists.openvehicles.com"
moz-do-not-send="true" class="moz-txt-link-freetext">ovmsdev@lists.openvehicles.com</a>>
wrote:<br>
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<div>Check your DTCs with leafspy,
if it shows a bunch of DTCs
including a B2604 BCM Shift PN
diag, then likely low 12v, try a
24 hr charge or replace it.</div>
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<div> </div>
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<div> </div>
<div>I did indeed have B2604-00, along
with nineteen others. Most of these
mention CAN errors, and it seems
plausible that low 12v could be a common
cause.</div>
<div> </div>
<div>Do you think this rules out a poor
OVMS OBDII connection? I'm thinking if I
have high resistance in that connector,
then OVMS will experience low voltage
but the rest of the car modules will
have good voltage.</div>
<div> </div>
<div>However I see codes that suggest
communication errors between Nissan
modules:</div>
<div>C118C-01 ABS Brake: Malfunction is
detected in VCM system. Control module
communication issue.</div>
<div>B2064-00 BCM Shift PN Diag CAN:
Park-Neutral position switch signal
discrepancy</div>
<div>C1A70-01 BRAKE: Malfunction is
detected in ABS actuator control unit
system</div>
<div>U1266-02 MULTI AV: Malfunction is
detected between the AV control unit and
TCU</div>
<div>U0428-00 AVM: Invalid data received
from steering angle sensor module</div>
<div> </div>
<div>So I'm thinking perhaps the whole car
briefly had low voltage.</div>
<div> </div>
<div>To try to fix this, I cleaned the 12v
battery terminals and performed a long
charge. After clearing the codes, I have
only two codes that reappear.</div>
<div> </div>
<div>P317E-00 EV/HEV HV Battery System
EVC-249 (perhaps caused by <a
href="https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/issues/1061"
rel="noopener noreferrer"
target="_blank" moz-do-not-send="true">#1061</a>)</div>
<div>U1A06-15 TCU Communication incorrect
calibration (probably because I've
removed its antenna)</div>
<div> </div>
<div>Chris</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
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<br>
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<pre class="moz-signature" cols="72">--
Michael Balzer * Am Rahmen 5 * D-58313 Herdecke
Fon 02330 9104094 * Handy 0176 20698926</pre>
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