so I brought my 2001 disco 53000 to the dealer last week becase of the ses light. They reset my mixing adaptations and after 200 miles the ses light is back on. I changed my maf before I went to the dealer, and now I am getting p1172 p1175. Any suggestions???? o2 sensors??

 

No those are not O2 codes.
www.mechanicdoctor.com

Those codes are beyond me.

 

They came back because the ECU will reprogram (adapt) itself, not sure why they did a temporary fix like that. Codes are for running rich on both cylinder banks. At only 53,000 you should not need new O2 sensors unless you are getting a specific O2 sensor codes. Do you get misfires or a rough engine? What kind of MAF did you install, new or used? When was the last plug and wire tuneup? I'm not sure but let's see what other's have to add.

 

The truck runs perfect. I am at a loss? The newe maf is new, but it is an aftermarket maf

 

Its the aftermarket MAF, DII's are very peculiar about their MAF's.

 

Are you running an aftermarket MAF, possibly from NAPA, if so take it back, tell them it throws codes get your money back and buy a proper MAF.
The 1172 indicates oxygen sensors running rich on both banks, 1175 indicates additive injector fueling exceeding lean limits.
So if need be, start with the MAF, once installed clear the codes and the others may go away on their own.

 

should I buy a Bosch MAF??

 

Not sure who makes the OEM MAF, try this:

http://www.roverparts.com/Parts/ERR7171G.cfm

Or if on a budget, this:

http://www.roverlandparts.com/1999-2...sensor40l.aspx

Or if really on a budget try roverguy.com

 

Yes BOSCH is the OEM MAF for a DII.

 

Yes you want a Bosch but you need the Bosch model that came on the engine from the factory. There are aftermarket Bosck MAFs on the market that look identical to the factory Rover part but will not work properly with the computer system. Unfortunately the MAF is not one of the areas where you can go aftermarket and save money.