Question about 2002 Subaru Outback
Had diagnostics run on my car by my regular mechanic and he came up with the code indicating the cat converter needs to be replaced at the tune of about $2,000.00 including labor a couple of months ago. I was floored by the expense and after talking to a friend who used to be a mechanic, thought I would wait to see if the check engine light would come on again which it did last week. This time I took the car to the Subaru Dealership in town and told them the check engine light was on but did not tell them what the other mechanic had told me. They pulled the code P0420. Told me the cat converter would need to be replaced also at $1400.00. I asked them if it could be the O2 sensors and they said another code would have been pulled for that... They felt it was the cat converter. I have since called a couple muffler shops in town and most of them will not give me a quote until they can see the car and how many converters it has.
Can you give me some advice as to what to now. The car has 109,000 miles.
I have my Check engine light coming on plus it was "missing". My garage mechanic diagnosed it too the plugs and leads need changing and also the knock sensor. Neither which I have done as it was over $800 to do this. So I'm just living with it until it gets worse and the true problem shows itself
Posted on Nov 24, 2008
Well if the cat code comes up then that would be your problem i would take it to other muffler shops to see how much it wil cost but being its a foriegn car the cost will be high. but i think that 1400 or 2000 is way to high
Posted on Nov 08, 2008
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Posted on Jan 02, 2017
CODE PO420 CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD BANK I * CODE PO325 KNOCK SENSOR NO.1 CIRCUIT MALFUNCTION BANK NO.1 OR SINGLE SENSOR
Posted on Nov 14, 2009
that code is saying you have a problem with that system. if you go to autozone thay can print that code out for that tells you what to check. other then that you may need to get it diagnosed by a professional
Posted on Nov 23, 2009
I do not know for sure if this is the problem you are having, But, I have noticed that from 95 up to 2002 I have seen a lot of PO420 codes that have been just the sensor. I do not know if it was a weak sensor or just that program telling it that it is below threshold. I did notice that if the vehicles are run for a long trip at highway speed it goes out. I wish you luck and have a great day.
Posted on Feb 11, 2010
P0420 code is usually a sign of s weak fuel pump, and needs to be replaced. Also if you replace the pump and still get that code, check your fuel lines back by the tank and make sure that they are not pinched or smashed. this will also give the same code due to restricted fuel pressure, on the ruturn or supply line........ Good Luck
Posted on Oct 08, 2010
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