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 DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 18 (ENGINE CONTROL SYSTEM (5.6L) (DTC/CIRCUIT DIAGNOSIS) (8 OF 9))
2019 Infiniti Q70 3.7 Luxe, AWD
Section 18 (Engine Control System (5.6L) (DTC/Circuit Diagnosis) (8 Of 9))
2019 Infiniti Q70 3.7 Luxe, AWDSECTION Section 18 (Engine Control System (5.6L) (DTC/Circuit Diagnosis) (8 Of 9))
WARNING: This page is about a different variant/trim than selected.
- DTC Index
- DTC/Circuit Diagnosis
- DTC P2241: A/F Sensor1 (B2)
- DTC P2242: A/F Sensor1 (B2)
- DTC P2251: A/F Sensor1 (B1)
- DTC P2252: A/F Sensor1 (B1)
- DTC P2253: A/F Sensor1 (B1)
- DTC P2254: A/F Sensor1 (B2)
- DTC P2255: A/F Sensor1 (B2)
- DTC P2256: A/F Sensor1 (B2)
- DTC P2610: ECM Internal Timer
- DTC P2271: Ho2S2 (B1)
- DTC P2273: Ho2S2 (B2)
- ASCD Brake Switch
- ASCD Indicator
- Cooling Fan
- Electrical Load Signal
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.