Error code

[Shorty43]

Hi all keep getting an error code come up PO171 system to lean bank 1 have replaced the first oxygen sensor and only jusy passed the mot on emmisions could this be a faulty cat?? 2001 amk engine,any help would really be appreciated.thanks

 

[S3AMJ]

Check for any vacuum/air leaks


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[Shorty43]

Ok thanks will have a look

 

[<tuffty/>]

Have also seen this code come up indicating a tired fuel pump

<tuffty/>

 

[Shorty43]

ok thanks is there any way to test the fuel pump or will i just have to replace with new one,thanks