"SITUATION: ENGINE INSTABILITY MAY BE EXPERIENCED. THE MALFUNCTION INDICATOR LAMP (MIL) WILL BE DISPLAYED AND DIAGNOSTIC TROUBLE CODES (DTC) P0301, P0302, P0303, P0304, AND/OR P0315 MAY BE STORED IN THE ENGINE CONTROL MODULE (ECM).
NOTE: THE OWNERÂ’S HANDBOOK STATES: 'PREMIUM UNLEADED GASOLINE WITH A COST OF LIVING COUNCIL
(CLC) OR ANTI KNOCK INDEX (AKI) OCTANE RATING OF 91 OR HIGHER MUST BE USED.'
CAUSE: THIS MAY BE CAUSED BY VARIABLE FUEL QUALITY."
