SES codes PO 108 and PO 123

[mandjsstuff]

Last night my Service Engine Light came on. Went to Auotzone ready to buy whatever I needed. They ran the codes and the guy basically said he had no clue and didn't want ot sell me anything because my codes indicated high inputs. They were (1) P0108** Manifold Absolute Pressure/Barometric Pressure Circuit High Input and (2) P0123** Throttle/Petal Position Sensor/Switch A Circuit High Input. I also have noticed that at times when I hit a bump my radio and message center blink off. My inclination is to pull the computer out and clean contacts and hope. Another problem that may be related is a banging noise from the rear speakers with my aftermarket Pioneer CD. I have noticed it seems affected by the weather (mid 30's-40's) and accerlation. Suggestions would be great.

[dppavlis]

What mods have you done?

[mandjsstuff]

Originally Posted by dppavlis

What mods have you done?

Engine is a bone stock 3.8 base model GT.

The radio is a Pioneer with PAC control for the steering.

I've installed a remote starter with the T harness from Bulldog security. The T harness eliminates the need to cut the wiring harness as it splices between the harness that plugs in at the steering column. The only splices are for the trunk release button, and the running lights.

Hope this helps.

Mike

[Dwilko]

Yours might be a little different, but I just got the P0108 code. Replaced the M.A.P. sensor (took all of 10 seconds), and POOF, SES light gone.

[mandjsstuff]

Originally Posted by Dwilko

Yours might be a little different, but I just got the P0108 code. Replaced the M.A.P. sensor (took all of 10 seconds), and POOF, SES light gone.

Well I decided before I'd take it to the dealer, I'd clean a few connections and see what happened. I cleaned the contacts to the battery, the main fuse relay and the ground going to the body from the battery pigtail. I also unplugged and re plugged the computer module. The SES code stayed on for about 20 minutes and has been gone for about a 1000 miles.

Maybe its a simple cure.... I hope.

Mike