Search the Community
Showing results for tags 'oxygen sensor'.
Found 6 results
-
Mom's 2002 Outback keeps throwing the code p0420. I'm told this means "catalytic converter". History (within the last six months): 2002 Outback, odometer 165,000, purchased from used Subaru sales/repair business. - Engine bearing went out. Highway breakdown within 1000 miles of purchase. - Short block replaced. - Check engine p0420. Shop replaced cat saying maybe the engine failure ruined the cat. - Check engine p0420. Shop says 2002 Outbacks have this problem, not 2001, not 2003. Shop says we could 1) try various fuel additives, 2) replace cat with genuine Subaru part for around $1000, or 3) replace cat with a high performance cat Magnaflow for $500. - Installed Magnaflow - Check engine p0420. Shop says again its just this year for some reason. Options: 1) replace magnaflow with Subaru cat, and receive $500 credit, 2) swap 2002 computer out with a 2001 Outback, since its really the computer that is having the problem, or 3) keep trying different additives. When I mentioned o=o2 sensor, the shop said there's another code for that, so that isn't the problem. So what to do? Is this 2002 Outback cat problem a well known problem? Because I'm not finding a lot of talk about it. How exactly does information about the catalytic converter flow to the computer? How are o2 sensors related? How to get this check engine light to go away so my poor mother can drive in peace? -
I received the following 2 codes late last year: P0030 Heated oxygen sensor heater control circuit Bank 1 Sensor 1 & P0134 Oxygen sensor circuit no activity detected Bank 1 Sensor 1 After resetting the codes about 2 or 3 times, I replaced my Upstream O2 Sensor. No issues until just recently. Only this time I got the P0134 code alone. Either way, it's pointing me to the same O2 Sensor I just replaced. Before I purchase another, more expensive O2 Sensor - are there any other areas 'pre-upstream sensor' I should be looking in to? Sidenote 1 When the code popped up most recently, I removed the Sensor and cleaned with a wire wheel and replaced. Checked all contacts for resistance and continuity. Everything looked good and about 2 days later the CEL went out and didn't come back for about a month (where I'm at now). Sidenote 2 I burn a full quart of oil in between Oil changes (every 4,000 mi.). I mention this because I worry I may have the beginning signs of an internal head gasket leak (oil transfer between galleys and cylinders) which may jack up my combustion and fowl up O2 sensors. Just a thought though, I can't be sure of this as there seems to be no smoke from the rear at start up. Regards, -
I have been chasing the cause of extreme surging with this car. It was a bad O2 sensor. So as a quick heads up, most people will tell you its not possible for that to be the cause, but trust me it was. With the new O2 sensor it was running much better (solved the extreme surging) but with some slight hesitation and almost a miss. Later in the day I am pretty sure I found the source of the hesitation/miss... Timing belt that decided to break on my way to show off the car to a buddy. Hopefully the new timing belt will take care of the last remaining problems. But let me digress, I had a fun time changing the O2 sensor on the newly purchased 1993 Subaru Loyale. After many trips to the store to grab different tools and things I ended up getting the O2 sensor out. At first I spent some time attempting to use a harbor freight O2 sensor removal tool but just managed to figure out that its a bit tight to make that tool work and once you have figured out a way to make it work... its a 22mm O2 sensor and not a 7/8 like the harbor freight tool. Ok run to the local autozone and rent there O2 tool kit (25.99). Throw on the 22mm O2 sensor tool and manage to fight the sensor for another 30+ minutes before saying screw it and removing the whole y-pipe. Once the y-pipe was out I managed to finish rounding off most the existing O2 sensor and was ready to take to my friends metal shop to just drill it out. Then I had one last idea, remove the heat shield and see if I could fit a box end on the O2 sensor that way. Magically it worked. I could fit a 22mm box wrench on the O2 sensor and with some help of a rubber mallet I was able to break free the O2 sensor from the exhaust. It was a bitch but I am pretty sure this was the only way I would have been able to remove the O2 sensor and also the most simple fool proof way to do it. tl;dr Remove the y-pipe. Once thats free remove the heat shield around the cat. Use a 22mm wrench and a rubber mallet to beat the O2 sensor out of the cat. Tools Needed: 12mm, 14mm, 22mm, rubber mallet, PB blaster (or something of the sort), rags. Hope my pain is another mans gain.
-
I snapped off the threaded collar on the catalytic converter for the front oxygen sensor and am now trying to replace the whole catalytic converter from flange to flange. How do you get the top bolt off of the front flange between the cat and the header pipe? -
I have had no problems driving the car. Parked it in the garage last Friday. Monday morning, it won't start but it does turn over and cranks. I have checked the following things: -- spark, good in #1 cyl. Didn't check the rest -- fuel, appears to be getting fuel, didn't measure fuel pressure -- timing belt- took of the end covers. Belt is intact and has good tension. Didn't check timing marks. -- codes- only stored code is 32 o2 sensor I did notice that the radiator fans run continuously when the key is on. Is this normal? I'm thinking about replacing the coolant temp sensor. Can the CTS fail in a way that would prevent the car from starting? -
Hi there, I'm living overseas in southeastern europe. There is a dealer nearby in Croatia and Slovenia but it's a lot cheaper to just have a mechanic here help with my problem. The check engine light comes on when I drive over 3 hours on the highway - it's happened a couple of times. I now just clear the error message when it comes on. It is error code P0420 - catalyst efficiency below threshold (Bank one). The dealer checked it out for 15 minutes and said I needed to replace the catalytic converter. A mechanic in Bosnia told me that the catalytic converter looked ok and I should just replace the oxygen sensor. My question is - what is bank one on a Subaru Outback 2005 limited? How do I know which sensor to replace? I'm nowhere close to being a car expert so appreciate any advice.
