Originally Posted by
Taz
Hello DMAX403,
DTC P2A04 refers to oxygen sensor bank 2 sensor 2. DTC P2A01 refers to oxygen sensor bank 1 sensor 2.
These are the post cat oxygen sensors used to monitor catalytic convertor performance. They probably would have originally been set to “2 Trips, Emissions Related”. Setting them to “Not Reported” will eliminate the DTC.
As long as your cats are in good working order, tailpipe emissions won’t be effected. Check your local emissions requirements - this change would probably cause an issue in an area with any type of scanner or “readiness” test requirement.
Trying to remind myself this is a global forum, with varying emissions test requirements by region or nation …
Regards,
Taz