Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2017 Infiniti QX50 AWDFACTORY OEM SERVICE PROCEDURE
DTC Index
DTC INDEX
| DTC | Description |
|---|---|
| DTC P0447 | EVAP CANISTER VENT CONTROL VALVE |
| DTC P0448 | EVAP CANISTER VENT CONTROL VALVE |
| DTC P0451 | EVAP CONTROL SYSTEM PRESSURE SENSOR |
| DTC P0452 | EVAP CONTROL SYSTEM PRESSURE SENSOR |
| DTC P0453 | EVAP CONTROL SYSTEM PRESSURE SENSOR |
| DTC P0456 | EVAP CONTROL SYSTEM |
| DTC P0460 | FUEL LEVEL SENSOR |
| DTC P0461 | FUEL LEVEL SENSOR |
| DTC P0462, P0463 | FUEL LEVEL SENSOR |
| DTC P0500 | VSS |
| DTC P0506 | ISC SYSTEM |
| DTC P0507 | ISC SYSTEM |
| DTC P050A, P050B, P050E | COLD START CONTROL |
| DTC P0524 | ENGINE OIL PRESSURE |
| DTC P0550 | PSP SENSOR |
| DTC P0603 | ECM POWER SUPPLY |
| DTC P0605 | ECM |
| DTC P0607 | ECM |
| DTC P0643 | SENSOR POWER SUPPLY |
| DTC P0850 | PNP SWITCH |
| DTC P100A, P100B | VVEL SYSTEM |
| DTC P1087, P1088 | VVEL SYSTEM |
| DTC P1089, P1092 | VVEL CONTROL SHAFT POSITION SENSOR |
| DTC P1090, P1093 | VVEL ACTUATOR MOTOR |
| DTC P1091 | VVEL ACTUATOR MOTOR RELAY |
| DTC P1148, P1168 | CLOSED LOOP CONTROL |
| DTC P1211 | TCS CONTROL UNIT |
| DTC P1212 | TCS COMMUNICATION LINE |
| DTC P1217 | ENGINE OVER TEMPERATURE |
| DTC P1225, P1234 | TP SENSOR |
| DTC P1226, P1235 | TP SENSOR |
| DTC P1233, P2101 | ELECTRIC THROTTLE CONTROL FUNCTION |
| DTC P1236, P2118 | THROTTLE CONTROL MOTOR |
| DTC P1238, P2119 | ELECTRIC THROTTLE CONTROL ACTUATOR |
| DTC P1239, P2135 | TP SENSOR |
| DTC P1290, P2100, P2103 | THROTTLE CONTROL MOTOR RELAY |
| DTC P1550 | BATTERY CURRENT SENSOR |
| DTC P1551, P1552 | BATTERY CURRENT SENSOR |
| DTC P1553 | BATTERY CURRENT SENSOR |
| DTC P1554 | BATTERY CURRENT SENSOR |
| DTC P1564 | ASCD STEERING SWITCH |
| DTC P1564 | ICC STEERING SWITCH |
| DTC P1568 | ICC FUNCTION |
| DTC P1572 | ASCD BRAKE SWITCH |
| DTC P1572 | ICC BRAKE SWITCH |
| DTC P1574 | ASCD VEHICLE SPEED SENSOR |
| DTC P1574 | ICC VEHICLE SPEED SENSOR |
| DTC P1606 | VVEL CONTROL MODULE |
| DTC P1607 | VVEL CONTROL MODULE |
| DTC P1608 | VVEL SENSOR POWER SUPPLY |
| DTC P1805 | BRAKE SWITCH |
| DTC P2096, P2097, P2098, P2099 | A/F SENSOR 1 |
| DTC P2122, P2123 | APP SENSOR |
| DTC P2127, P2128 | APP SENSOR |
| DTC P2138 | APP SENSOR |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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