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.
2012 Infiniti QX56 RWDFACTORY OEM SERVICE PROCEDURE
For MEXICO
ENGINE CONTROL SYSTEM (FOR MEXICO) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC P0011 | IVT CONTROL |
| DTC P0021 | IVT CONTROL |
| DTC P0031 | A/F SENSOR 1 HEATER |
| DTC P0032 | A/F SENSOR 1 HEATER |
| DTC P0037 | HO2S2 HEATER |
| DTC P0038 | HO2S2 HEATER |
| DTC P0051 | A/F SENSOR 1 HEATER |
| DTC P0052 | A/F SENSOR 1 HEATER |
| DTC P0057 | HO2S2 HEATER |
| DTC P0058 | HO2S2 HEATER |
| DTC P0075 | IVT CONTROL SOLENOID VALVE |
| DTC P0081 | IVT CONTROL SOLENOID VALVE |
| DTC P0087 | FRP CONTROL SYSTEM |
| DTC P0088 | FRP CONTROL SYSTEM |
| DTC P008A | LOW FUEL PRESSURE CONTROL SYSTEM |
| DTC P0090 | HIGH PRESSURE FUEL PUMP |
| DTC P0102 | MAF SENSOR |
| DTC P0103 | MAF SENSOR |
| DTC P0112 | IAT SENSOR |
| DTC P0113 | IAT SENSOR |
| DTC P0117 | ECT SENSOR |
| DTC P0118 | ECT SENSOR |
| DTC P0122 | TP SENSOR |
| DTC P0123 | TP SENSOR |
| DTC P0130 | A/F SENSOR 1 |
| DTC P0131 | A/F SENSOR 1 |
| DTC P0132 | A/F SENSOR 1 |
| DTC P0133 | A/F SENSOR 1 |
| DTC P0137 | HO2S2 |
| DTC P0138 | HO2S2 |
| DTC P0139 | HO2S2 |
| DTC P0150 | A/F SENSOR 1 |
| DTC P0151 | A/F SENSOR 1 |
| DTC P0152 | A/F SENSOR 1 |
| DTC P0153 | A/F SENSOR 1 |
| DTC P0157 | HO2S2 |
| DTC P0158 | HO2S2 |
| DTC P0159 | HO2S2 |
| DTC P0171 | FUEL INJECTION SYSTEM FUNCTION |
| DTC P0174 | FUEL INJECTION SYSTEM FUNCTION |
| DTC P0172 | FUEL INJECTION SYSTEM FUNCTION |
| DTC P0175 | FUEL INJECTION SYSTEM FUNCTION |
| DTC P0190 | FRP SENSOR |
| DTC P0197 | EOT SENSOR |
| DTC P0198 | EOT SENSOR |
| DTC P0201 | INJECTOR |
| DTC P0202 | INJECTOR |
| DTC P0203 | INJECTOR |
| DTC P0204 | INJECTOR |
| DTC P0205 | INJECTOR |
| DTC P0206 | INJECTOR |
| DTC P0207 | INJECTOR |
| DTC P0208 | INJECTOR |
| DTC P0222 | TP SENSOR |
| DTC P0223 | TP SENSOR |
| DTC P0300 | MISFIRE |
| DTC P0301 | MISFIRE |
| DTC P0302 | MISFIRE |
| DTC P0303 | MISFIRE |
| DTC P0304 | MISFIRE |
| DTC P0305 | MISFIRE |
| DTC P0306 | MISFIRE |
| DTC P0307 | MISFIRE |
| DTC P0308 | MISFIRE |
| DTC P0327 | KS |
| DTC P0328 | KS |
| DTC P0332 | KS |
| DTC P0333 | KS |
| DTC P0335 | CKP SENSOR |
| DTC P0340 | CMP SENSOR |
| DTC P0345 | CMP SENSOR |
| DTC P0420 | THREE WAY CATALYST FUNCTION |
| DTC P0430 | THREE WAY CATALYST FUNCTION |
| DTC P0444 | EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE |
| DTC P0447 | EVAP CANISTER VENT CONTROL VALVE |
| DTC P0452 | EVAP CONTROL SYSTEM PRESSURE SENSOR |
| DTC P0453 | EVAP CONTROL SYSTEM PRESSURE SENSOR |
| DTC P0500 | VSS |
| DTC P0506 | ISC SYSTEM |
| DTC P0507 | ISC SYSTEM |
| DTC P0524 | ENGINE OIL PRESSURE |
| DTC P0527 | COOLING FAN SPEED SENSOR |
| DTC P0550 | PSP SENSOR |
| DTC P0603 | ECM POWER SUPPLY |
| DTC P0605 | ECM |
| DTC P0607 | ECM |
| DTC P0611 | ECM PROTECTION |
| DTC P062B | ECM |
| DTC P0643 | SENSOR POWER SUPPLY |
| DTC P0850 | PNP SWITCH |
| DTC P100A | VVEL SYSTEM |
| DTC P100B | VVEL SYSTEM |
| DTC P1087 | VVEL SYSTEM |
| DTC P1088 | VVEL SYSTEM |
| DTC P1089 | VVEL CONTROL SHAFT POSITION SENSOR |
| DTC P1090 | VVEL ACTUATOR MOTOR |
| DTC P1091 | VVEL ACTUATOR MOTOR RELAY |
| DTC P1092 | VVEL CONTROL SHAFT POSITION SENSOR |
| DTC P1093 | VVEL ACTUATOR MOTOR |
| DTC P1197 | OUT OF GAS |
| DTC P1212 | TCS COMMUNICATION LINE |
| DTC P1217 | ENGINE OVER TEMPERATURE |
| DTC P1220 | FUEL PUMP CONTROL MODULE (FPCM) |
| DTC P1225 | TP SENSOR |
| DTC P1226 | TP SENSOR |
| DTC P1550 | BATTERY CURRENT SENSOR |
| DTC P1551 | BATTERY CURRENT SENSOR |
| DTC P1552 | BATTERY CURRENT SENSOR |
| DTC P1553 | BATTERY CURRENT SENSOR |
| DTC P1554 | BATTERY CURRENT SENSOR |
| DTC P1556 | BATTERY TEMPERATURE SENSOR |
| DTC P1557 | BATTERY TEMPERATURE SENSOR |
| DTC P1564 | ICC STEERING SWITCH |
| DTC P1568 | ICC FUNCTION |
| DTC P1572 | ICC BRAKE SWITCH |
| DTC P1606 | VVEL CONTROL MODULE |
| DTC P1607 | VVEL CONTROL MODULE |
| DTC P1608 | VVEL SENSOR POWER SUPPLY |
| DTC P1650 | STARTER MOTOR RELAY 2 |
| DTC P1651 | STARTER MOTOR RELAY |
| DTC P1652 | STARTER MOTOR SYSTEM COMM |
| DTC P1715 | INPUT SPEED SENSOR |
| DTC P1805 | BRAKE SWITCH |
| DTC P2100 | THROTTLE CONTROL MOTOR RELAY |
| DTC P2101 | ELECTRIC THROTTLE CONTROL FUNCTION |
| DTC P2103 | THROTTLE CONTROL MOTOR RELAY |
| DTC P2118 | THROTTLE CONTROL MOTOR |
| DTC P2119 | ELECTRIC THROTTLE CONTROL ACTUATOR |
| DTC P2122 | APP SENSOR |
| DTC P2123 | APP SENSOR |
| DTC P2127 | APP SENSOR |
| DTC P2128 | APP SENSOR |
| DTC P2135 | TP SENSOR |
| DTC P2138 | APP SENSOR |
| DTC P2539 | LOW FUEL PRESSURE SENSOR |
| DTC U0101 | CAN COMM CIRCUIT |
| DTC U0113 | CAN COMM CIRCUIT |
| DTC U1001 | CAN COMM CIRCUIT |
| DTC U1003 | CAN COMM CIRCUIT |
| DTC U1024 | CAN COMM CIRCUIT |
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.
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