Eml light with P1646 OBD error code

[ely.gedt]

Hello all, 

I have a 2002 x type 2.0 petrol

The engine fault warning light is on

Error codes P1000 and P1646 that indicate Bank 1 sensor 1 fault. 

Found it had an o/C heater. After replacing and resetting error, the light still comes on after 15 seconds or so

I took a screenshot of my OBD scanner monitor. See image

Any ideas? 

P. S. Changed B1S2 sensor as well

[JOE-DOT-COM]

hi

P1000 is normal after code reset till its done a full drive cycle then will clear on its own

P1646 is a bad lambda, are you sure you changed the correct one, if the faults still there

also on the S-type, cheap lambda dont work, only denso one seem to work

cheers

Joe