fault Code

1. LScottBell Frequent Poster Joined: Oct 2009 Posts: 822 Citroen Saxo Vtr 2001

   #1 14th February 2010, 00:42

   Hi
   
   Searched around the forum about this...
   
   Fault code p0420 bank1.
   
   What shall i change or is it maybe a sensor needing cleaned?
   Can this cause high fuel consumption?
   
   Thanks for any help
2. Predator_R32p Super Moderator Joined: Mar 2003 Durham (England) Posts: 37932 1. AX 2. Mk2 Saxo VTR 3. MK4 R32 DBP

   #2 14th February 2010, 07:13

   not sure what the fault code is try reading the manual/guide on the code reader to determine what the code means maybe
3. LScottBell Frequent Poster Joined: Oct 2009 Posts: 822 Citroen Saxo Vtr 2001

   #3 14th February 2010, 07:50

   Catalyst efficiency below threshold (Bank 1) My car is also drinking fuel.. Sound like a faulty lambda sensor?
4. Predator_R32p Super Moderator Joined: Mar 2003 Durham (England) Posts: 37932 1. AX 2. Mk2 Saxo VTR 3. MK4 R32 DBP

   #4 14th February 2010, 08:37

   could well be mate
   
   or maybe a MAF sensor
5. LScottBell Frequent Poster Joined: Oct 2009 Posts: 822 Citroen Saxo Vtr 2001

   #5 14th February 2010, 12:14

   Lambda sensor is stuck Unreal !
   
   Can this be took off somehow ?