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 QX70 AWDFACTORY OEM SERVICE PROCEDURE
Engine Control System DTCS
ENGINE CONTROL SYSTEM (1 of 2) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
ENGINE CONTROL SYSTEM (2 of 2) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC P0443 | EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE |
| DTC P0444, P0445 | EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE |
| 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, 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
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.