DTC Inspection Priority Chart
WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority chart.
| Priority | Detected items (DTC) | Detected items (DTC) |
|---|---|---|
| 1 | U0101, U1000 | CAN communication line |
| P0101, P0102, P0103 | Mass air flow sensor | |
| P0111, P0112, P0113, P0127 | Intake air temperature sensor | |
| P0116, 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 | |
| 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 | |
| P0520 | EOP sensor | |
| P0603, P0604, P0605, P0606, P0607, P060A, P060B, P062F, P2610 | ECM | |
| P0643 | Sensor power supply | |
| P0850 | Transmission range switch | |
| P1078, P1084 | Exhaust valve timing control position sensor | |
| P1610 - P1615 | NATS | |
| P2122, P2123, P2127, P2128, P2138 | Accelerator pedal position sensor | |
| 2 | P0030, P0031, P0032, P0036, P0051, P0052 | Air fuel ratio (A/F) sensor 1 heater |
| P0037, P0038, P0057, P0058, P0141, P0161 | Heated oxygen sensor 2 heater | |
| P0075, P0081 | Intake valve timing control solenoid valve/Intake valve timing intermediate lock control solenoid valve | |
| P0078, P0084 | Exhaust valve timing control solenoid valve | |
| P0130, P0131, P0132, P014C, P014D, P014E, P014F, P0150, P0151, P0152, P015A, P015B, P015C, P015D, P2096, P2097, P2098, P2099 | 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 | |
| P1217 | Engine over temperature (OVERHEAT) | |
| P1800, P1801 | VIAS control solenoid valve | |
| P1805 | Brake switch | |
| P2100, P2103 | Throttle control motor relay | |
| P2101 | Electric throttle control function | |
| P2118 | Throttle control motor | |
| 3 | P0011, P0021, P052A, P052B, P052C, P052D | 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 | |
| P0456 | EVAP control system (VERY SMALL LEAK) | |
| P0506, P0507 | Idle speed control system | |
| P050A, P050E | Cold start control | |
| P0524 | Engine oil pressure | |
| P1148, P1168 | Closed loop control | |
| P1212 | TCS communication line | |
| P1564 | ASCD steering switch / ICC steering switch | |
| P1572 | Brake pedal position switch | |
| P1574 | ASCD vehicle speed sensor / ICC vehicle speed sensor | |
| P1715 | Primary speed sensor | |
| P2119 | Electric throttle control actuator | |
| P219A, P219B | Air fuel ratio (A/F) sensor 1 |