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.
2020 Infiniti QX80 LimitedFACTORY OEM SERVICE PROCEDURE
DTC Index
DTC INDEX
| DTC | Description |
|---|---|
| DTC P014D | A/F SENSOR 1 |
| DTC P014E | A/F SENSOR 1 |
| DTC P014F | A/F SENSOR 1 |
| DTC P0150 | A/F SENSOR 1 |
| DTC P0151 | A/F SENSOR 1 |
| DTC P0152 | A/F SENSOR 1 |
| DTC P0156 | HEATED OXGEN SENSOR 2 |
| DTC P0157 | HO2S2 |
| DTC P0158 | HO2S2 |
| DTC P0159 | HO2S2 |
| DTC P015A | A/F SENSOR 1 |
| DTC P015B | A/F SENSOR 1 |
| DTC P015C | A/F SENSOR 1 |
| DTC P015D | A/F SENSOR 1 |
| DTC P0171 | FUEL INJECTION SYSTEM FUNCTION |
| DTC P0172 | FUEL INJECTION SYSTEM FUNCTION |
| DTC P0174 | FUEL INJECTION SYSTEM FUNCTION |
| DTC P0175 | FUEL INJECTION SYSTEM FUNCTION |
| DTC P0181 | FTT SENSOR |
| DTC P0182 | FTT SENSOR |
| DTC P0183 | FTT SENSOR |
| DTC P0190 | FRP SENSOR |
| DTC P0191 | FRP SENSOR |
| DTC P0192 | FRP SENSOR |
| DTC P0193 | FRP SENSOR |
| DTC P0196 | ENGINE OIL TEMPERATURE SENSOR |
| DTC P0197 | ENGINE OIL TEMPERATURE SENSOR |
| DTC P0198 | ENGINE OIL TEMPERATURE SENSOR |
| DTC P01F0 | ENGINE COOLANT TEMPERATURE |
| 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 |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.