According to the powertrain diagnostics manual, P2269 is Water In Fuel.
The manual goes on to describe the diagnostic/repair procedure:
Set Condition: low voltage detected at t he WIF signal circuit at the ECM.
Possible Causes:
-Water in fuel sensor signal circuit short to ground.
-ECM
Actions:
1. Drain the water in fuel separator. With the DRBIII, erase DTCs. Cycle the ignition switch from on to off to on. With the DRBIII, read DTCs. Did the DTC P2269 return?
-Yes: Refer to symptom P0178 - Water in fuel sensor voltage too low.
-No: go to number 2
2. Disconnect the Water in Fuel sensor harness connector. Monitor the DRBIII while jumping the signal circuit of the water in fuel sensor and battery(+). Did the water in fuel light go out?
-Yes: test complete
-No: replace ECM
That's copied right from the book, page 241. Hope it helps!