Subaru Legacy Outback error codes

opus1963opus1963 Member Posts: 1
edited April 2015 in Subaru
wondering about the knock sensor ,location if esy to check operation/wires etc.powertrain control module monitors it so what is the best case scenarion on this? Just chg. timing belt ,runs really well,error codes not erased when I bought it.Low fuel pressure listed as pssibility? fuel pump maybe?
catalyst efficiency below threshold bank 1 ? a/f ratio ,ignition system malfunction...or catalytic converter? Again best case scenario where to start?
cylinder 3 misfire ;bad/leaking injector,ignition sensor malfunction ,valve ADJ.?
I love car only 144000 miles on it?
Just looking for ideas on what i may be looking at in expenses etc..Thanks Bruce


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