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.
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HOMESERVICE MANUALSINFINITI2019Q70 3.7 LUXE, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM (3.7L) (DTC/CIRCUIT DIAGNOSIS) (8 OF 9)DTC INDEX
2019 Infiniti Q70 3.7 Luxe, AWD
DTC Index
2019 Infiniti Q70 3.7 Luxe, AWDSECTION DTC Index
DTC INDEX
| DTC | Description |
|---|---|
| DTC P2254 | AIR FUEL RATIO SENSOR 1 |
| DTC P2255 | AIR FUEL RATIO SENSOR 1 |
| DTC P2256 | AIR FUEL RATIO SENSOR 1 |
| DTC P2270 | O2 SENSOR |
| DTC P2271 | O2 SENSOR |
| DTC P2272 | HEATED OXYGEN SENSOR 2 |
| DTC P2273 | HEATED OXYGEN SENSOR 2 |
| DTC P2297 | AIR FUEL RATIO SENSOR 1 |
| DTC P2298 | AIR FUEL RATIO SENSOR 2 |
| DTC P2610 | ECM INTERNAL TIMER |
RENDER: 1.0x
NO RELATED
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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.