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Home >> Infiniti >> 2003 >> G35 2D Coupe, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls System - Introduction - Coupe >> Trouble Diagnosis >> DTC Inspection Priority Chart

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, 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
  • P0128 Thermostat function
  • P0122 P0123 P0222 P0223 P1225 P1226 P1229 P2135 Throttle position sensor
  • P0181 P0182 P0183 Fuel tank temperature sensor
  • P0327 P0328 Knock sensor
  • P0335 Crankshaft position sensor (POS)
  • P0340 P0345 Camshaft position sensor (PHASE)
  • P0460 P0461 P0462 Fuel level sensor
  • P0500 Vehicle speed sensor
  • P0605 ECM
  • P0705 Park/Neutral position (PNP) switch
  • P1229 Sensor power supply
  • P1610 - P1615 NATS
  • P1706 Park/Neutral position (PNP) switch
  • P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor
2
  • P0031P0032 P0051 P0052 Heated oxygen sensor 1 heater
  • P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater
  • P0132 P0133 P0134 P0152 P0153 P0154 P1143 P1144 P1163 P1164 Heated oxygen sensor 1
  • P0138 P0139 P0158 P0159 P1146 P1147 P1166 P1167 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
  • P0550 Power steering pressure sensor
  • P1710 P0720 P0725 P0740 P0744 P0745 P1705 P1716 P1730 P1752 P1754 P1757 P1759 P1762 P1764 P1767 P1769 P1772 P1774 A/T related sensors, solenoid valves and switches
  • P1065 ECM power supply
  • P1111 P1136 Intake valve timing control solenoid valve
  • P1122 Electric throttle control function
  • P1124 P1126 P1128 Electric throttle control actuator
  • P1217 Engine over temperature (OVERHEAT)
  • P1805 Brake switch
3
  • P0011 P0021 Intake 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
  • P0506 P0507 Idle speed control system
  • P1121 Electric throttle control actuator
  • P1148 P1168 Closed loop control
  • P1211 TCS control unit
  • P1212 TCS communication line
  • P1564 ASCD steering switch
  • P1572 ASCD brake switch
  • P1574 ASCD vehicle speed sensor