Failing PCM???

[Mystery Bird]

At the track this weekend I logged one of my runs and discovered numerous DTC codes. Some of them happened more than once. I have never seen this before. The car ran great and still runs fine. Here is a list of them in the order they appeared during a seven minute time span:
Codes:
41 EST Open
65 Right O2 Rich
37 Brake Switch Stuck On
23 MAT Low
55 Fuel System Lean
85 TCC Stuck On
66 A/C Press Sensor Open/Short
14 Cool Temp High
46 Fuel Enable [VATS] Fail
16 Lo-Res Fail
71 A/C Evap Sensor Failed
22 TPS Low
99 Tach Ouput Circuit Fault
32 EGR System Fault
68 A/C Relay Shorted
51 EPROM/Flash Checksum Fail

[Fastbird]

Ummm.......wow. Those seem to all be for the most part totally unrelated too. Try a spare PCM if you can, see what happens.

[Chris]

Start load teating powers grounds to the pcm. Then I'd pick one code to diag and see if anything is out of the ordinary

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[Mystery Bird]

I'm going to go through all the grounds when I get a chance. Hopefully tonight.

Fastbird those codes are whacked right? Especially since I have EGR and VATS tuned out.

[Chris]

Make sure you dont just look at them load thoose bad boys up n voltage drop the circuits you want no more than .3v dropped ideally

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[Mystery Bird]

I found something last night. I was looking at the wiring on the MSD 6A box and noticed one of the wires that plugs into the coil was frayed. When I went to remove it the wire broke in half so I removed the whole box. It never did anything anyway. I will log data in the next day or so to see if that was it.

[Mystery Bird]

It was definitely the MSD 6A box. Ran the car yesterday and no codes at all.