The following info is from kiatechinfo

P1121 TPS circuit from ECM and TCM
Related Items
ò Short to GND or B+ between ECM and 1CM.
ò Open Between ECM and TCM.


With ignition off, disconnect C211 from ECM and C229 from 1CM. Connect adapter cable #K99U2103-G17 to BOB and vehicle C229 to adapter cable (leave adapter cable 0229 disconnected from TCM). Measure resistance between BOB-20 and C211-38 (less than I ohm).

What does this mean, what is BOB and how can I check without his help?


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Weird...
I reset the cars computer and...
it coughed and spluttered then died. After several attempts to get it going, and keep it going with pedal depressed and some high revs, I had to take it for a drive. After 30 minutes of driving the car found some settings to at least make it driveable. I plugged back into the computer and read the codes P1123 and P1127 ???
Kiatechinfo doesn't list these codes.
All this has just started since I replaced the idle air control valve and mass air flow sensor with new ones. I also cleaned the K&N air filter.
What are these codes?

I forgot to mention about the TPS. I gave it a bath with electrical contact cleaner. It seems to have fixed itself - no more P1121

Check out this thread: http://www.4x4wire.com/forums/showflat.php?Cat=&Number=1044374&Main=1044370

Those codes all point to fuel ratio issues. If all the codes started popping up after washing down the engine(?), then I'd suspect one or more of the plugs on the fuel/air system are grounding or faulting due to moisture (TPS, MAF, MAS, etc). The thread I've noted above ended up being a product of mud on the MAF. A few cleanings and it was fine - though it could have been cured by the connector drying during the process of cleaning. I know there's no specific advice here. But those are some areas to check. Hope that helps...

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