View Full Version : Code 543 help

10-29-2009, 03:45 PM
Did a search this is what I came up with.

1) Relay is going bad
2) O2 sensor is going bad
3) Tube from charcoal canister issue (EVAP)

Any suggestion?

The tube from the charcoal canister I just hooked back up when I finished doing some upgrades. I've had it disconnected since I put head gaskets in it a few years ago. Other than that I have little to no idea what could be wrong. The only other code that I got was a 124 which is the TPS and I've read that there are issues with the TPS on the BBK TB's so I gotta work on making mine adjustable and get it set right.