NISSAN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. RECALL CAMPAIGN. SOME VEHICLES ARE EQUIPPED WITH AN IMPROPERLY CALIBRATED ENGINE CONTROL MODULE (ECM) THAT MAY INCORRECTLY DETECT ENGINE VALVE CLOSURE AS ENGINE KNOCK. *JS UPDATED 5/16/12. *PE UPDATED 5/30/12. *PE UPDATED 7/3/12. *PE