Strange Fault Codes 1172/1175 v.s. 17...

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Author Message   Chris Lomonico (Clomonico) New Member Username: Clomonico Post Number: 6 Registered: 11-2002 Posted on Saturday, March 01, 2003 - 07:08 pm:    Alright this has been going on for a while now in my 2000 disco. To start i was getting obd2 codes 171 and 174, in addition to the LR factory codes of 1172 and 1175. The first 2 were no problem, indicating that i was running too lean (left and right banks respectively), i found out that 1172 means that i am running too rich (left and right banks) from Denver East. I replaced the air filter with a K&N, did new plugs and wires, and even replaced the front 2 oxygen sensors, as i was told if O2 sensors were bad, it would most likely be the front 2 by a service tech. I am willing to change the rear 2 O2's but before i do that i want to see if anybody out here has any insight on this problem. thanks for any help, -- Chris Lomonico   Chris Lomonico (Clomonico) New Member Username: Clomonico Post Number: 7 Registered: 11-2002 Posted on Saturday, March 01, 2003 - 07:13 pm:    Oh yea there is one more thing, we live in leadville, elevation 10,200 ft, not that it really means much, however the codes did not start until we moved up here from denver