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SOURCE: Check Engine Light
Hello engelhard58
I have attached a link that can give you some of the reasons why your getting that code.I hope you able to get your answer out of that.
Mean of the code=P0420 Catalyst System Efficiency Below Threshold.
Link to site
SOURCE: 1998 subaru forester runs rough when it rains.
Check the cap and rotor for internal carbon tracking or, just change them. Also, take a look at the coil when its dark and rainy and see if there is any arcing where the coil wire goes into it.
SOURCE: 2004 subaru forester, 99,000 miles. Check engine
Drop in to an Autozone, or Pep Boys, or similar big parts store & they will usually scan for codes free. This will hopefully eliminate all the guess work, or at least point everyone in right direction for better diagnosis. If not obvious from codes what the problem is, get back to us and we'll help you out.
Testimonial: "Thanks for the great suggestion . I'll have Autozone read the codes on Monday. Thanks again!"
SOURCE: check engine light flashing - engine idles roughly
the car should be OBD 2 compliant. therefore run a scan on it to find out exactly wot the problem is
SOURCE: My Subaru Forester engine light and cruise control
could be transmission fault, connect the 2 loose black plugs together under the drivers side dash, turn on ignition, no start, the ecl will flash the code, slow flashes are 10's and fast ones are 1's. codes can be got from bba-reman.com
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