Trouble code P0420 means:Catalyst system efficiency below threshold
Type your answer here... Hello how do you reset the check engine light on a 2003 Toyota 4runner. Thanks
Usual first sign is a check engine light with a code P0420.Usual first sign is a check engine light with a code P0420.
http://www.extreme-check-engine-light-codes.com/Toyota%20OBD1%20Decoder.htm
Trouble code P0420 means:Catalyst system efficiency below threshold
remove the efi fuse for 1 minute if the light comes back on you have a problem
Trouble code P0420 means:Catalyst system efficiency below threshold (bank 1)
you would have code "pending" and a check engine light
open fuse box remove efi [fuel injector fuse for about10 seconds
how to discontect the engine light on a 2001 toyota camery ?
separate
To reset the check engine light on a 2005 Toyota 4Runner, you can disconnect the negative battery cable for about 10-15 minutes, which will clear the engine codes and turn off the light. Alternatively, you can use an OBD-II scanner to clear the trouble codes after diagnosing the issue. However, make sure to address any underlying problems before resetting the light to prevent it from coming back on.
with alot of expirience :)