High idle - TPS?

[Working_ZS]

Originally Posted by Lukas

I wonder if it adapts itself?

I would suspect that it calibrates at each key on event, similar to what many cars do. This would help the ECU to adapt as the TPS wears over time, until such time as it simply can't make heads or tails of what the signal from the TPS is saying, which is when it would throw a TPS trouble code.

The thing is, Charles only has an O2 sensor trouble code - nothing about the TPS, plus his TPS voltage graphs look good (virtually identical) at normal and high idle. I think that his TPS is OK, the issue is in the O2 circuit; either the wiring, connector, or the sensor itself.