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.
2024 Infiniti QX55 EssentialFACTORY OEM SERVICE PROCEDURE
Engine Control System (1 Of 4)
DTC Index
| DTC | Description |
|---|---|
| C053C | WHEEL SPEED SENSOR |
| U0101 | CAN COMM CIRCUIT |
| U0122 | VEHICLE DYNAMICS CONTROL MODULE |
| U012E | CAN COMMUNICATION |
| U0146 | CAN COMMUNICATION |
| U0155 | CAN COMMUNICATION (COMBINATION METER) |
| U042F | CAN COMMUNICATION |
| U1000 | CAN COMM CIRCUIT (ECM) |
| U1000 | CAN COMM CIRCUIT (ATR CONTROL MODULE) |
| U1001 | CAN COMM CIRCUIT |
| U1040 | ENG COMM CIRCUIT |
| U1044 | ENG COMM CIRCUIT |
| U1050, U1051 | LIN COMMUNICATION |
| U10A0 | Lost communication (Variable compression ratio) |
| U2140 | CAN COMM CIRCUIT |
| P0010 | INTAKE VALVE TIMING CONTROL |
| P0011 | IVT CONTROL |
| P0012 | INTAKE VALVE TIMING CONTROL |
| P0014 | EVT CONTROL |
| P0015 | EXHAUST VALVE TIMING CONTROL |
| P0016 | INTAKE VALVE TIMING CONTROL |
| P0017 | EXHAUST VALVE TIMING CONTROL |
| P0031, P0032 | A/F SENSOR 1 HEATER |
| P0037, P0038 | HO2S2 HEATER |
| P0046 | WASTEGATE CONTROL MOTOR |
| P0053 | A/F SENSOR 1 HEATER |
| P0078 | EVT CONTROL SOLENOID VALVE |
| P0087 | FRP CONTROL SYSTEM |
| P0088 | FRP CONTROL SYSTEM |
| P0090 | FRP SYSTEM |
| P0096 | IAT SENSOR 2 |
| P0097, P0098 | IAT SENSOR 2 |
| P00B3, P00B4 | ENGINE COOLANT TEMPERATURE SENSOR 2 |
| P00C0 | Turbocharger/Supercharger Bypass Valve B |
| P00C1, P00C2 | TURBOCHARGER BYPASS CONTROL VALVE |
| P00D2, P00D4 | HEATED OXYGEN SENSOR 2 HEATER |
| P00FE | EVAP CONTROL SYSTEM |
| P0101 | MAF SENSOR |
| P0102, P0103 | MAF SENSOR |
| P0106 | MANIFOLD ABSOLUTE PRESSURE SENSOR |
| P0107 | BAROMETRIC PRESSURE SENSOR |
| P0108 | BAROMETRIC PRESSURE SENSOR |
| P010A | MANIFOLD ABSOLUTE PRESSURE SENSOR |
| P0111 | IAT SENSOR |
| P0112, P0113 | IAT SENSOR |
| P0116 | ECT SENSOR |
| P0117, P0118 | ECT SENSOR |
| P011C | IAT SENSOR |
| P0122, P0123 | TP SENSOR |
| P0125 | ECT SENSOR |
| P0127 | IAT SENSOR |
| P0128 | THERMOSTAT FUNCTION |
| P0130 | A/F SENSOR 1 |
| P0131 | A/F SENSOR 1 |
| P0132 | A/F SENSOR 1 |
| P0136 | O2 sensor bank 1 sensor 2 |
| P0137 | HO2S2 |
| P0138 | HO2S2 |
Factory Service Tools
Use the Manual With the Right Hardware
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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.