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 2 (ENGINE CONTROL SYSTEM (5.6L) (DTC/CIRCUIT DIAGNOSIS) (2 OF 9))
2019 Infiniti Q70 3.7 Luxe, AWD
Section 2 (Engine Control System (5.6L) (DTC/Circuit Diagnosis) (2 Of 9))
2019 Infiniti Q70 3.7 Luxe, AWDSECTION Section 2 (Engine Control System (5.6L) (DTC/Circuit Diagnosis) (2 Of 9))
WARNING: This page is about a different variant/trim than selected.
- DTC Index
- DTC/Circuit Diagnosis
- DTC P0102, P0103, P010C, P010D: MAF Sensor
- DTC P010A: Manifold Absolute Pressure Sensor
- DTC P0111: IAT Sensor
- DTC P0112, P0113: IAT Sensor
- DTC P0116: ECT Sensor
- DTC P0117, P0118: ECT Sensor
- DTC P0122, P0123, P0227, P0228: TP Sensor
- DTC P0125: ECT Sensor
- DTC P0127: IAT Sensor
- DTC P0128: Thermostat Function
- DTC P0130, P0150: A/F Sensor 1
- DTC P0131, P0151: A/F Sensor 1
- DTC P0132, P0152: A/F Sensor 1
- DTC P0136: Air Fuel Ratio Sensor 2
- DTC P0137, P0157: Ho2S2
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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.