DTC Detection Logic

NOTE: If DTC P117A or P117B is displayed with other DTC, first perform the trouble diagnosis for the other DTC. Refer to "DTC INDEX ".

DTC No.	CONSULT screen terms (Trouble diagnosis content)	DTC detecting condition	Possible cause
P117A	AIR FUEL RATIO B1 (AIR FUEL RATIO B1)	ECM detects a lean/rich air fuel ratio state in any cylinder for a specified length of time.	Fuel injector Exhaust gas leaks Incorrect fuel pressure Mass air flow sensor Intake air leaks Lack of fuel Incorrect PCV hose connection Improper spark plug Insufficient compression The fuel injector circuit is open or shorted ignition coil The ignition signal circuit is open or shorted
P117B	AIR FUEL RATIO B2 (AIR FUEL RATIO B2)