[Ovmsdev] Another incident

[Chris Box]

>> 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.

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.

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.

However I see codes that suggest communication errors between Nissan 
modules:
C118C-01 ABS Brake: Malfunction is detected in VCM system. Control 
module communication issue.
B2064-00 BCM Shift PN Diag CAN: Park-Neutral position switch signal 
discrepancy
C1A70-01 BRAKE: Malfunction is detected in ABS actuator control unit 
system
U1266-02 MULTI AV: Malfunction is detected between the AV control unit 
and TCU
U0428-00 AVM: Invalid data received from steering angle sensor module

So I'm thinking perhaps the whole car briefly had low voltage.

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.

P317E-00 EV/HEV HV Battery System EVC-249 (perhaps caused by #1061 [1])
U1A06-15 TCU Communication incorrect calibration (probably because I've 
removed its antenna)

Chris


Links:
------
[1] 
https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/issues/1061
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