error codes

osugsxr

Senior Member
I completed an oil change yesterday and decided to scan for any codes. I had no CEL on the dash but the following codes came up. I have tried resetting them without luck, and removed battery and let the car sit for 10 minutes and connected again. Car drives and works fine it seems.

U0100-BCM. lost commmuincation with ECM/PCM "A"
B1206- BCM driver door ajar switch circuit fault
B23210 BCM- mirro control circuit malfuncation
U0101- lost comm with tcm
U0151- lost communcation with restraint control module
 
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this is what I would do:

test battery. enough voltage when off, getting 14v ish when on? then,
disconnect battery for an hour
connect battery, start car, idle 10 minutes, drive 10 minutes normally. check codes
if codes return then I believe they were there before the oil change and indicates a deeper problem especially if you notice any strange lighting behaviours. do you have OEM interior and exterior lights or have you used LEDs?
 
this is what I would do:

test battery. enough voltage when off, getting 14v ish when on? then,
disconnect battery for an hour
connect battery, start car, idle 10 minutes, drive 10 minutes normally. check codes
if codes return then I believe they were there before the oil change and indicates a deeper problem especially if you notice any strange lighting behaviours. do you have OEM interior and exterior lights or have you used LEDs?

battery resting / car off at 11.9
I believe codes were there before oil change , just never scanned the car in about 5 months or so.
No strange issues and everything seems normal. I have OEM led lights that were retrofitted about 3-4 years ago. All interior lights are OEM halogen.

Im thinking a fuse is bad , if so which one would I check. Battery going bad?
 
Last edited:
battery resting / car off at 11.9
I believe codes were there before oil change , just never scanned the car in about 5 months or so.
No strange issues and everything seems normal. I have OEM led lights that were retrofitted about 3-4 years ago. All interior lights are OEM halogen.

Im thinking a fuse is bad , if so which one would I check. Battery going bad?

11.9 is low. I've always measured at 12.6ish when car is off. do you have access to a trickler?
 
11.9 is low. I've always measured at 12.6ish when car is off. do you have access to a trickler?

I do have one , battery might be under warranty still from costco (2 or 3 years) ill have to check. As for trickle charging it would it help the battery jump back up to the normal range? Car starts fine still but eventually battery will fail.
 
11.9 is low. I've always measured at 12.6ish when car is off. do you have access to a trickler?

replaced the battery, errors code are hit miss now. Scanned a few times and they either show up or dont. Till a CEL comes ill deal with it then in more detail.
 

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