SRS light going off (did some searching and have codes)

TacomaWorld!

Hope all is well and thanks for any tips here.
I did some searching all morning, some seem to have had similar issues, but not exactly...

My SRS light has come on. Doesn't always stay on at startup, but once you get going, it'll come on. I didn't do what the other forum member do which was sit and moved around in both seats, buckled/unbuckled seat belts. Seems like he concluded it was his clock spring.

I would suspect it's the clockspring except I replaced it in the last 2-3 years myself with an OEM Toyota part because the horn wasn't working.
So unless it went bad again?!

Here are the codes:
B1650
B1653
B1655
B1801
B1821
B1826

No other issues or lights, just the SRS.
Oh and a TPMS, but that went away... I'm sure I'm due to replace the TPMSs which Costco will do.

Thanks in advance for any help.

 

It's interesting, those codes don't appear to have anything in common aside from the Airbag ECU (Center Airbag Sensor Assembly). Only one is for the driver's airbag.
Have you had any issues with water getting into the cab?


B1650: Occupant Classification System Malfunction
B1653: Seat Position Sensor Malfunction
B1655: Driver's Seat Belt Buckle Switch Malfunction
B1801: Open in Driver's Side (Steering Wheel Airbag)Squib Circuit
B1821: Open in Driver's Seat Squib Circuit
B1826: Short in Passenger's Seat Squib Circuit

 

Hmm, thanks so much.
No, no water/moisture inside the cab that I know of. But the truck is parked outside, and it rained heavily (for Southern CA) a few weeks ago.
I drive it through water/muddy water when I take it semi-offroad a month or so back in Dec.
A trustworthy shop said they would diagnose for $150 after running the codes.

I've just had so much luck with this forum that I figured I can ask and do some DIY-ing.
As mentioned, I changed out the clock spring prior.
I'd love to look int his Airbag ECU (Center Airbag Sensor Assembly).

Thanks again!