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.
2016 Infiniti QX80 Base, AWDFACTORY OEM SERVICE PROCEDURE
Engine Control System DTCS
ENGINE CONTROL SYSTEM (1 OF 3) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC P0172, P0175 | FUEL INJECTION SYSTEM FUNCTION |
| DTC P0181 | FTT SENSOR |
| DTC P0182, P0183 | FTT SENSOR |
| DTC P0190, P0192, P0193 | FRP SENSOR |
| DTC P0191 | FRP SENSOR |
| DTC P0196 | EOT SENSOR |
| DTC P0197, P0198 | EOT SENSOR |
| DTC P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208 | INJECTOR |
| DTC P0222, P0223 | TP SENSOR |
| DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 | MISFIRE |
| DTC P0327, P0328, P0332, P0333 | KS |
| DTC P0335 | CKP SENSOR |
| DTC P0340, P0345 | CMP SENSOR |
| DTC P0420, P0430 | THREE WAY CATALYST FUNCTION |
| DTC P0441 | EVAP CONTROL SYSTEM |
| 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, P050B, P050E | COLD START CONTROL |
| DTC P0520 | EOP SENSOR |
| DTC P0527 | COOLING FAN SPEED SENSOR |
| DTC P0544, P0545 | EXHAUST GAS TEMPERATURE SENSOR |
| DTC P0546, P2081 | EXHAUST GAS TEMPERATURE SENSOR |
| DTC P0547, P0548 | EXHAUST GAS TEMPERATURE SENSOR |
| DTC P0549, P2083 | EXHAUST GAS TEMPERATURE SENSOR |
| DTC P0550 | PSP SENSOR |
| DTC P0603 | ECM |
| DTC P0604 | ECM |
| DTC P0605 | ECM |
| DTC P0606 | ECM |
| DTC P0607 | ECM |
| DTC P060A | ECM |
| DTC P060B | ECM |
| DTC P0611 | ECM PROTECTION |
| DTC P062B | ECM |
| DTC P062F | CONTROL MODULE |
| DTC P0643 | SENSOR POWER SUPPLY |
| DTC P0850 | PNP SWITCH |
| DTC P100A, P100B | VVEL SYSTEM |
| DTC P1078, P1084 | EVT CONTROL POSITION SENSOR |
| 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 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 P1423, P1424 | COLD START CONTROL |
| DTC P1550 | BATTERY CURRENT SENSOR |
| DTC P1551, P1552 | BATTERY CURRENT SENSOR |
ENGINE CONTROL SYSTEM (2 OF 3) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC P1553 | BATTERY CURRENT SENSOR HIGH SIGNAL VOLTAGE TRANSMITTED |
| DTC P1554 | BATTERY CURRENT SENSOR LOW OUTPUT VOLTAGE |
| DTC P1556, P1557 | BATTERY TEMPERATURE SENSOR HIGH OR LOW SIGNAL VOLTAGE |
| DTC P1564 | ASCD STEERING SWITCH VOLTAGE SIGNAL / INPUT SIGNAL FAULT |
| DTC P1564 | INTELLIGENT CRUISE CONTROL (ICC) STEERING SWITCH VOLTAGE SIGNAL / INPUT SIGNAL FAULT |
| DTC P1568 | INTELLIGENT CRUISE CONTROL (ICC) COMMAND SIGNAL VALUE FAULT |
| DTC P1572 | ASCD BRAKE SWITCH SIGNAL FAULT |
| DTC P1572 | INTELLIGENT CRUISE CONTROL (ICC) BRAKE SWITCH SIGNAL FAULT |
| DTC P1574 | ASCD VEHICLE SPEED SENSOR SIGNAL FAULT |
| DTC P1574 | INTELLIGENT CRUISE CONTROL (ICC) VEHICLE SPEED SENSOR SIGNAL FAULT |
| DTC P1606 | VVEL CONTROL MODULE CALCULATION FUNCTION OR EEP-ROM SYSTEM MALFUNCTION |
| DTC P1607 | VVEL CONTROL MODULE INTERNAL CIRCUIT MALFUNCTION |
| DTC P1608 | VVEL SENSOR POWER SUPPLY VOLTAGE LOW OR HIGH |
| DTC P1805 | BRAKE SWITCH SIGNAL EXTREME DELAY |
| DTC P2080 | EXHAUST GAS TEMPERATURE SENSOR BANK 1 SENSOR 1 CIRCUIT RANGE/PERFORMANCE |
| DTC P2082 | EXHAUST GAS TEMPERATURE SENSOR BANK 2 SENSOR 1 CIRCUIT RANGE/PERFORMANCE |
| DTC P2096, P2097, P2098, P2099 | AIR/FUEL (A/F) SENSOR 1 TOO LEAN OR RICH (BANK 1 OR 2) |
| DTC P2100, P2103 | THROTTLE CONTROL MOTOR RELAY CIRCUIT OPEN OR SHORT |
| DTC P2101 | ELECTRIC THROTTLE CONTROL MALFUNCTION |
| DTC P2118 | THROTTLE CONTROL MOTOR SHORT DETECTED IN BOTH CIRCUITS |
| DTC P2119 | ELECTRIC THROTTLE CONTROL ACTUATOR MALFUNCTION |
| DTC P2122, P2123 | ACCELERATOR PEDAL POSITION (APP) SENSOR 1 LOW OR HIGH SIGNAL VOLTAGE |
| DTC P2127, P2128 | ACCELERATOR PEDAL POSITION (APP) SENSOR 2 LOW OR HIGH SIGNAL VOLTAGE |
| DTC P2135 | THROTTLE POSITION (TP) SENSOR 1 AND 2 SIGNAL FAULT |
| DTC P2138 | ACCELERATOR PEDAL POSITION (APP) SENSOR 1 AND 2 SIGNAL FAULT |
| DTC P219A, P219B | AIR FUEL RATIO IMBALANCE (BANK 1 OR 2) |
| DTC P219C, P219D, P219E, P219F, P21A0, P21A1, P21A2, P21A3 | AIR FUEL RATIO IMBALANCE (CYLINDER 1, 2, 3, 4, 5, 6, 7, OR 8) |
| DTC P2610 | ECM INTERNAL ENGINE OFF TIMER MALFUNCTION |
| DTC P26A3 | ENGINE COOLANT BYPASS VALVE MALFUNCTION |
| DTC P26A5 | ENGINE COOLANT BYPASS VALVE "A" POSITION SENSOR CIRCUIT SIGNAL RANGE/PERFORMANCE |
| DTC P26A6 | P26A7 ENGINE COOLANT BYPASS VALVE "A" POSITION SENSOR CIRCUIT SIGNAL VOLTAGE HIGH OR LOW |
| DTC P26AB | ENGINE COOLANT TEMPERATURE TOO LOW |
ENGINE CONTROL SYSTEM (3 OF 3) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC U0101 | CAN COMM CIRCUIT |
| DTC U0113, U1003 | CAN COMM CIRCUIT |
| DTC U1001 | CAN COMM CIRCUIT |
| DTC U1024 | CAN COMM CIRCUIT |
| DTC P0011, P0021 | IVT CONTROL |
| DTC P0014, P0024 | EVT CONTROL |
| DTC P0030, P0031, P0032, P0036, P0051, P0052 | A/F SENSOR 1 HEATER |
| DTC P0037, P0038, P0057, P0058 | HO2S2 HEATER |
| DTC P0075, P0081 | IVT CONTROL SOLENOID VALVE |
| DTC P0078, P0084 | EVT CONTROL SOLENOID VALVE |
| DTC P0087 | FRP CONTROL SYSTEM |
| DTC P0088 | FRP CONTROL SYSTEM |
| DTC P0090 | HIGH PRESSURE FUEL PUMP |
| DTC P00B3, P00B4 | ENGINE COOLANT TEMPERATURE SENSOR 2 |
| DTC P0101 | MAF SENSOR |
| DTC P0102, P0103 | MAF SENSOR |
| DTC P0111 | IAT SENSOR |
| DTC P0112, P0113 | IAT SENSOR |
| DTC P0116 | ENGINE COOLANT TEMPERATURE SENSOR 1 |
| DTC P0117, P0118 | ENGINE COOLANT TEMPERATURE SENSOR 1 |
| DTC P0122, P0123 | TP SENSOR |
| DTC P0125 | ECT SENSOR |
| DTC P0127 | IAT SENSOR |
| DTC P0130, P0150 | A/F SENSOR 1 |
| DTC P0131, P0151 | A/F SENSOR 1 |
| DTC P0132, P0152 | A/F SENSOR 1 |
| DTC P0137, P0157 | HO2S2 |
| DTC P0138, P0158 | HO2S2 |
| DTC P0139, P0159 | HO2S2 |
| DTC P014C, P014D, P014E, P014F, P015A, P015B, P015C, P015D | A/F SENSOR 1 |
| DTC P0171, P0174 | FUEL INJECTION SYSTEM FUNCTION |
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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