Sorry, I'd forgotten about this one.
What I'd look at is....
- {C0805}: Add lots, you shouldn't need to max out every cell, but as you get higher in the TPS% range it can't hurt.
- {C0806}: Again, add lots,you shouldn't need to max out every cell, but as you get higher in the TPS% range it can't hurt.
Note that both of these are "change" related settings, it's not an absolute measurement but an amount of change from the previous reading.
- {C0807}: A new setting to play with. It may be worht trying to increase this value to see if it helps. I've never played with it and have no idea what it'll do though. Proceed with caution.
- {C0808): As above.
Don't forget to check the FF's when the DTC's are set. They can hold additional inmformation about what condition actually set the DTC
If it really gets hard to tie down, you could try setting P2101 to "not reported" in the "DTC Type" settings. Probably not something you'd do on a long term basis, but for fault finding it may help.
Simon