- Messages
- 1
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- 0
- City
- Essex
- State
- Non-US
- Country
- United Kingdom
- What I Drive
- 2009 Focus
Hi all,
I've looked at some live readings on ForScan to assess a P0420 code that popped up. To my untrained eye, everything looks fine, bar the 02 Bank1 Sensor 2 giving near on identical reading to 02 Bank1 Sensor 1. While they are neither 02 are switching between rich and lean as quickly as I like, I don't know if I'm expecting too much here from my 2009 Focus engine.
The MAF sensor is rising with the revs, as I believe to be expected.
The MAP sensor decreases with rpm, as I believe to be expected.
Fuel trim looks fine, rises with revs with the top end around 10%, as I believe is normal.
Braking results in both sensors to switch to lean, as I believe is normal.
I'm simply trying to exclude any other possibilities before I start looking at a new cat. Any nudges in the possible right direction would be a big help. Does anything look out of the ordinary from the data?
I've looked at some live readings on ForScan to assess a P0420 code that popped up. To my untrained eye, everything looks fine, bar the 02 Bank1 Sensor 2 giving near on identical reading to 02 Bank1 Sensor 1. While they are neither 02 are switching between rich and lean as quickly as I like, I don't know if I'm expecting too much here from my 2009 Focus engine.
The MAF sensor is rising with the revs, as I believe to be expected.
The MAP sensor decreases with rpm, as I believe to be expected.
Fuel trim looks fine, rises with revs with the top end around 10%, as I believe is normal.
Braking results in both sensors to switch to lean, as I believe is normal.
I'm simply trying to exclude any other possibilities before I start looking at a new cat. Any nudges in the possible right direction would be a big help. Does anything look out of the ordinary from the data?
