Authorized Distibutors
both sell product retail and sell to Dealers.
What do the 131/151 codes mean?
The codes are specifically listed as P0131 and P0151 codes. The description in
the Service Manual is:
P0131 Front O2 sensor low or engine running lean
P0151 Rear O2 sensor low or engine running lean
The key point to look at here is "O2 sensor low" when analyzing what
is happening with the XIED's in place.