DTC Inspection Priority Chart

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

NOTE: If DTC U1000 and/or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000 and U1001. Refer to "DTC U1000, U1001 CAN COMMUNICATION LINE ".

DTC INSPECTION PRIORITY CHART

Priority	Detected items (DTC)
1	U1000 U1001 CAN communication line P0101 P0102 P0103 Mass air flow sensor P0112 P0113 P0127 Intake air temperature sensor P0117 P0118 P0125 Engine coolant temperature sensor P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor P0128 Thermostat function P0181 P0182 P0183 Fuel tank temperature sensor P0327 P0328 Knock sensor P0335 Crankshaft position sensor (POS) P0340 Camshaft position sensor (PHASE) P0460 P0461 P0462 P0463 Fuel level sensor P0500 Vehicle speed sensor P0605 ECM P0700 TCM P0705 Park/Neutral position (PNP) switch P1229 Sensor power supply P1610 - P1615 NATS P1550 P1551 P1552 P1553 P1554 Battery current sensor P1706 Park/Neutral position (PNP) switch P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor
2	P0037 P0038 Heated oxygen sensor 2 heater P0138 P0139 P1146 P1147 Heated oxygen sensor 2 P0441 EVAP control system purge flow monitoring P0444 P0445 P1444 EVAP canister purge volume control solenoid valve P0447 P1446 EVAP canister vent control valve P0451 P0452 P0453 EVAP control system pressure sensor P0506 P0507 Idle speed control system P0550 power steering pressure sensor P0710 P0720 P0725 P0740 P0744 P0745 P1705 P1716 P1730 P1752 P1754 P1757 P1759 P1762 P1764 P1767 P1769 P1772 P1774 A/T related sensors and solenoid valves P1031 P1032 A/F sensor 1 heater P1065 ECM power supply P1111 Intake valve timing control solenoid valve P1122 Electric throttle control function P1124 P1126 P1128 Electric throttle control actuator P1271 P1272 P1273 P1274 P1276 P1278 P1279 A/F sensor 1 P1805 Brake switch
3	P0011 Intake valve timing control P0171 P0172 Fuel injection system function P0300 - P0304 Misfire P0420 Three way catalyst function P0442 P0456 EVAP control system (SMALL LEAK, VERY SMALL LEAK) P0455 EVAP control system (GROSS LEAK) P1121 Electric throttle control actuator P1148 Closed loop control P1217 Engine over temperature (OVERHEAT) P1564 ASCD steering switch P1572 ASCD brake switch P1574 ASCD vehicle speed sensor P1715 Turbine revolution sensor Priority Detected items (DTC)