Open Question: 2002 Land Rover Freelander P0174 1/2 P0171 2/2 Trouble Codes DTC?

28 July 2010, 8:22 am

Engine light on - P0154 P0174 P0171 DTC -- I replaced the O2 sensors (ALL of them) with aftermarket. Engine Light back on in one day. Now has P0174 bank 1 sensor 2 Lean and P0171 Bank 2 Sensor 2 Lean. I found a couple vac leaks, tightened the clamps and reset engine light. Car actually runs very well now. It used to rough idle. Engine light came back on in one day with same codes P0174 P0171 but the car is still running very well. I checked MAF sensor by taping it with a screwdriver while engine was running but noticed no difference. Any advice?... Read More »

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