If some DTCs are displayed at the same time, perform inspections one by one based on the following priority chart.

Priority	Detected items (DTC)
1	U1000 U1001 CAN communication line P0101 P0102 P0103 P010B P010C P010D Mass air flow sensor P0112 P0113 P0127 Intake air temperature sensor P0117 P0118 P0125 Engine coolant temperature sensor P0122 P0123 P0222 P0223 P0227 P0228 P1225 P1226 P1234 P1235 P1239 P2132 P2133 P2135 Throttle position sensor P0128 Thermostat function P0181 P0182 P0183 Fuel tank temperature sensor P0196 P0197 P0198 Engine oil temperature sensor P0327 P0328 P0332 P0333 Knock sensor P0335 Crankshaft position sensor (POS) P0340 P0345 Camshaft position sensor (PHASE) P0460 P0461 P0462 P0463 Fuel level sensor P0500 Vehicle speed sensor P0605 P0607 ECM P0643 Sensor power supply P0700 TCM P0705 P0850 Park/neutral position (PNP) switch P1550 P1551 P1552 P1553 P1554 Battery current sensor P1610 - P1615 NATS P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor
2	P0031 P0032 P0051 P0052 Air fuel ratio (A/F) sensor 1 heater P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater P0075 P0081 Intake valve timing control solenoid valve P0078 P0084 Exhaust valve timing control magnet retarder P0130 P0131 P0132 P0133 P0150 P0151 P0152 P0153 P2A00 P2A03 Air fuel ratio (A/F) sensor 1 P0137 P0138 P0139 P0157 P0158 P0159 Heated oxygen sensor 2 P0441 EVAP control system purge flow monitoring P0443 P0444 P0445 EVAP canister purge volume control solenoid valve P0447 P0448 EVAP canister vent control valve P0451 P0452 P0453 EVAP control system pressure sensor P0550 Power steering pressure sensor P0603 ECM power supply P0710 P0717 P0720 P0731 P0732 P0733 P0734 P0735 P0740 P0744 P0745 P1730 P1752 P1757 P1762 P1767 P1772 P1774 A/T related sensors, solenoid valves and switches P1078 P1084 Exhaust valve timing control position sensor P1217 Engine over temperature (OVERHEAT) P1233 P2101 Electric throttle control function P1236 P2118 Throttle control motor P1290 P2100 P2103 Throttle control motor relay P1805 Brake switch
3	P0011 P0021 Intake valve timing control P0014 P0024 Exhaust valve timing control P0171 P0172 P0174 P0175 Fuel injection system function P0300 - P0306 Misfire P0420 P0430 Three way catalyst function P0442 P0456 EVAP control system (SMALL LEAK, VERY SMALL LEAK) P0455 EVAP control system (GROSS LEAK) P0506 P0507 Idle speed control system P1148 P1168 Closed loop control P1211 TCS control unit P1212 TCS communication line P1238 P2119 Electric throttle control actuator P1421 Cold start control P1564 ICC steering switch / ASCD steering switch P1568 ICC command value P1572 ICC brake switch / ASCD brake switch P1574 ICC vehicle speed sensor / ASCD vehicle speed sensor P1715 Turbine revolution sensor