bldn10

I did a track event 9/15-16 and have hardly driven the car since then, <50 miles city driving. So Tues. I start it up and almost immediately get both ABS Failure and PSM Failure warnings. I drove it a few miles and they went off but came on later. I could detect no effect on driveability. Checked codes and there were none relevant to ABS or PSM. I did a test drive this afternoon and w/i a mile I got the same warnings. I got on it a few times and it is not in limp mode, accelerated normally. Checked codes again and again nothing. So what's the deal?

Pep!RRRR

bldn10

P1095, which may be an MAF, cleared and has not come back.
P2196 and 2198, which are O2 sensors probably caused by my aftermarket exhaust w/ 200 cell cats. I usually have the cat efficiency or warm up codes.
Yesterday there were none. I'm not sure ABS and PSM faults will throw codes that can be found via a basic code checker.

jg (atl)

Tidybuoy

I get the PSM failure code every time I jack the car up and put it on stands. Being that you were at the track, did you use track tires/wheels? When I get this code, I clear it with my Durametric and it will be gone until the next time I put the car on stands.

conceptDawg

Could be a loose connection on one of your ABS sensors. I had a PSM failure light at one point because a rock or some other sort of road debris and kicked up and hit the sensor. They replaced the small wire harness and it's never returned.

bldn10

Yes, I was on track wheels w/ slicks. But I had driven it a couple of times after I changed back to my street setup.

I do not have a Durametric and will not be able to check ABS/PSM codes here at home. I'm going to disconnect the battery and see if it clears out. And check the battery. Although it is not that old, it has run down several times and been charged.

The main concern I have is if PSM and ABS are working? I'll be at Road Atlanta this time next Sat. and don't want to be surprised.

bldn10

It appears to be fixed and add this to the list of weird things that will cause these serious-sounding warnings.
Leaving the house last night I discovered that the left front tire was totally flat. I think it had been going down and resulted in the left side being lower than right, and that freaked out the PSM control, ABS following suit. I also disconnected the battery for awhile but I think the flat tire was the cause. BTW the flat was caused by air leaking from a bend on the inside of the rim. Frigging potholes!