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Old 07-11-2011, 12:00 PM
xterramexico05 xterramexico05 is offline
Tech Enthusiast
2005 Xterra
Join Date: Oct 2008
Posts: 328

your 11 mpg is telling me that your air/fuel mixture is too rich... and its throwning the p0430 code.

best easy procedure is to disconnect your battery for 1 hour.... re-connect.... start engine and your ecu will be under air/fuel re-learning procedure..... 5 minutes to warm up engine.. no stop lights or stop signs.. you must go on open flat highway... keep rpm's at 2,000 . bring truck to 60mph and keep it at that speed for 20 minutes... exit and drive the same way on your way back...
take it easy on the gas for the next 5 days..
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