Infiniti Q50 : P1148 Engine Code Complete Fixing Guide
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Infiniti Q50 : P1148 Engine Code Complete Fixing Guide
The P1148 Engine Code in an Infiniti Q50 means the Closed Loop Control Function (Bank 1) has failed, usually because the Air-Fuel Ratio (AFR) Sensor Bank 1 Sensor 1 Heater Circuit is malfunctioning. The heater allows the AFR sensor to warm up quickly for precise air-fuel adjustments. When it fails, the ECM (Engine Control Module) cannot ...
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P0171 Code Diagnosis
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Including results for code p1148.
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