my engine mangerment light is on again , i have had a auto ele reset it and its n again , what is causing this

tony, January 2009

hi tony
I have the same problem.
Then i took it to a mech he diagnosied a fault with the lamba sensors code p20
replaced the front one and the fuel sensor had them reset after 100 miles and still there.
I need to replace the rear lamba senor also...£75
car runs ok no loss of power

Eddie, January 2009