got codes pulled at autozone
P0500 SPEED SENSOR MALFUNCTION
P1540 SPEED SENSOR MALFUNCTION 2
P1590 NEUTRAL POSITION SWITCH CIRCUIT HIGH INPUT
P1591 NEUTRAL POSITION SWITCH CIRCUIT LOW INPUT
P1518 STARTER SWITCH CIRCUIT LOW INPUT
P0512 STARTER SWITCH CIRCUIT HIGH INPUT
P0136 02 SENSOR MALFUNCTION BANK 1 SENSOR 1

I just installed the keyless entry with alarm upgrade yesterday, but i got the cel 2 days ago. after car was sitting in shop for 2 months. autozone cleared them and the speed sensor ones came back immediately. i'll try driving it around for a while then go back and see which ones are still there. anyone ever heard of the speed sensor malfunction

Is your CEL flashing constantly?
Check the green plugs under the driver side dash, if they are plugged together that is the cause. Unplug them and let them hang.

damn mulder that worked. now i remember plugging those wires in yesterday, figured they mate up they must go together. what are they for and why do they cause a cel?

thanks a bunch

They are the diagnostic mode connectors or something...I know I had to connect them while I installed my Accessport, but removed them right away.

Accessport, .


??????????

www.cobbtuning.com

Basically those connectors are supposed to be separate unless you are reprogramming your engine management computer or doing certain diagnostics.

Yep they are for an ECU diagnostic mode which you would never use, and they are also used to enable the Accessport to upload maps. They should never be left connected for normal driving.