Hi, My wife's 2002 Impreza 2.5 TS reports codes P0420 and P1442. First one is about the oxygen sensor - the diagnostic tool shows it works fine - there must be somre rare condition which triggers that. So I just choose to ignore it.
However second one: 1442 - I can find what it means. Does anybody know what it could be?
Thx in advance, Andy
P1442 Fuel Level Sensor Circuit Range/Perf
------------------------------------
PO420 Catalyst System Efficiency Below Threshold
P1442 Fuel Level Sensor Circuit Range/Perf
Andy,
This is what the chart that I have shows as the cause. Kinda Cryptic, but maybe a google will help decode this.
Bill
What are the miles on this and has any work been done recently?
Bill
Bill
You must not be an area that has yearly inspections. Won't pass around here with a light on so ignoring it is not an option. For what its worth the 420 code is not an O2 sensor code. It is a catalyst problem code. There is an O2 sensor before the cat and one after the cat. The reading between the 2 is compared to determine if the cat is functioning properly. If you determined both O2s are working correct (as you stated) than it may be getting time for a new cat. Did you reset the code and did it come back on?
WTF did my reply go? I replied last night and told you exactly what the error code was.
Txh for all the input. I will reset the computer (by disconnecting the battery) and observe if it goes off again.
A.
Googling gave this thread on another forum with more details on the P1442 (including what to do about it):
Have something to add? Share your thoughts — no account required.
Ask the community — no account required