I must be getting too old for this! Got a check engine light on the 1994 Le Sabre today. Hooked up my trusty Actron scanner and got PO123-TPS signal high. I thought all the OBD I codes were two digit numbers?

Joel

Must be a transition year vehicle.......from OBD I to II.....

94 is a GM OBD 1.5 year for the 3.8, so OBD 1 communication protocols, OBD 2 codes.

https://www.obd-codes.com/p0123

I am just glad to hear you have a scanner to read it. That is the biggest hurdle to overcome usually.

It'* usually either the TPS or wiring.

Thanks for the replies.
Yea, it is one those 1.5 OBD'*. I've always had good luck with the Actron CP9145.

For some reason that code just looked odd. But the scanner is showing 4.25 volts at idle, with 4.75 wide open throttle. I'll do some more testing before changing the TPS, but looks like that'* the problem.


Joel