Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
The cost to diagnose the P1174 BMW code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
P1175 is a condition where there is a lean fuel trim or more air than fuel ratio, what determines the lean fuel condition is the 02 sensor, this is more of a condition where the 02 has detected more air and the engine management cannot adapt. Check for vacuum leaks especially at the Mass Air Flow (MAF) Sensor air duct boot.
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