About 3 weeks ago, I drove thru a big puddle and my O/D light began flashing when I gave it some gas afterward. This happened once before and I attributed it to slippage.
About 30 minutes later, I get a CEL. I brought it to Autozone to get a reading and it came back as P0401, insufficient EGR flow. It is the original EGR on the car. I haven't checked for a vaccuum leak (will do it on Monday). Throttle body was cleaned last year.
Any suggestions otherwise???
