idosubaru Posted June 6, 2011 Share Posted June 6, 2011 got a P0032 code on a 2003 Subaru Legacy EJ25. Has a new front O2 sensor in it (didn't install it so I don't know the brand). Any words of advice besides replacing it? Link to comment Share on other sites More sharing options...
idosubaru Posted June 6, 2011 Author Share Posted June 6, 2011 looks like this happens with aftermarket sensors. folks are saying to use Subaru OEM, Denso or another brand....but not bosch. not sure which one is on there now. Link to comment Share on other sites More sharing options...
Olnick Posted June 6, 2011 Share Posted June 6, 2011 looks like this happens with aftermarket sensors. folks are saying to use Subaru OEM, Denso or another brand....but not bosch. not sure which one is on there now. Sorry gg, gotta' disagree with you there. Bosch makes excellent O2 sensors. As a matter of fact, they invented them! Until someone presents some hard proof, what "folks are saying" is nothing but old wives' tales. What is the " P0032 code"? I can't find a definition anywhere. Link to comment Share on other sites More sharing options...
idosubaru Posted June 6, 2011 Author Share Posted June 6, 2011 Sorry gg, gotta' disagree with you there. you're not disagreeing with me, i just googled it and skimmed some other subaru forums and regurgitated it, didn't really think about it. i always thought the bosch sensors were the way to go....so i'm in your camp probably. P0032 *Front oxygen (A/F) sensor heater circuit high input. Link to comment Share on other sites More sharing options...
ocei77 Posted June 6, 2011 Share Posted June 6, 2011 P0032:Upstream oxygen sensor heater circuit, high input O. Link to comment Share on other sites More sharing options...
Olnick Posted June 6, 2011 Share Posted June 6, 2011 Thanks guys, I finally found it too! And thanks for the response, gg. All that crap about "must be" is a pet peeve of mine. However when someone presents solid proof, I'll be out there leading the parade and waving the OEM flag! Link to comment Share on other sites More sharing options...
idosubaru Posted June 6, 2011 Author Share Posted June 6, 2011 yeah sorry, i was flipping through FSM's, google, and USMB all in about 7 minutes, so i was processing quickly, not effectively. i'll try another O2 and see what happens. code comes back instantly every time i clear it, so something is amiss. plan is to swap the sensor, paying attention to the wiring/connector as i do for any signs of issues. odd - that code is not listed in my 2000 FSM (which i assumed similar enough to 2003). Link to comment Share on other sites More sharing options...
shortlid Posted July 20, 2015 Share Posted July 20, 2015 Ok my '03 just tripped thatcode with118k on the clock. What is the froum recommend replacement Bosch, Denso, etc.? Link to comment Share on other sites More sharing options...
desertsubaru Posted July 20, 2015 Share Posted July 20, 2015 Denso IMO. Although Bosch invented the O2 sensor not all vehicles like them. Jeep Grand Cherokees hate them. They just don't run right in 90s jeeps. NTKs are good also. Denso is OEM. 1 Link to comment Share on other sites More sharing options...
shortlid Posted July 21, 2015 Share Posted July 21, 2015 Thanks I will stick to Japanese brands. That's what I was leaning toward. Link to comment Share on other sites More sharing options...
Fairtax4me Posted July 21, 2015 Share Posted July 21, 2015 Lots of Subarus use Bosch sensors as OE. But I've seen Denso as well. I generally try to match what's on the car if I think its the original. I've seen plenty of cars have issues with replacement Bosch sensors, and have seen plenty more with problems from cheapo no-name sensors. Link to comment Share on other sites More sharing options...
shortlid Posted July 21, 2015 Share Posted July 21, 2015 Just started throwing code yesterday. Shortly after startup. Reset with Torque app. Stays off during drive, however after cold start comes back. Youfolks think heater circut culprit then? Link to comment Share on other sites More sharing options...
Fairtax4me Posted July 21, 2015 Share Posted July 21, 2015 Just started throwing code yesterday. Shortly after startup. Reset with Torque app. Stays off during drive, however after cold start comes back. Youfolks think heater circut culprit then?Yes. Code P0032 Make SUBARU Description HO2S Heater Control Circuit High (Bank 1, Sensor 1) Link to comment Share on other sites More sharing options...
shortlid Posted July 21, 2015 Share Posted July 21, 2015 Ok will swaping the front forthe rear work? Or are both heated? Anyoneget the universal Denso that is a third of the price and wire in the connector them selves? Link to comment Share on other sites More sharing options...
Fairtax4me Posted July 21, 2015 Share Posted July 21, 2015 Need to find out if your car has CA or Federal emission. This will be on the emissions sticker on the hood, assuming the hood is original. Order the sensor to match. Front and rear sensors are different. Universals will only work if you car meets Federal emission. Link to comment Share on other sites More sharing options...
shortlid Posted July 21, 2015 Share Posted July 21, 2015 Under jood sticker says " conforms too US EPA NLEV and California 2003 LEV Standards?" Link to comment Share on other sites More sharing options...
Fairtax4me Posted July 21, 2015 Share Posted July 21, 2015 AND Californey emissions. Link to comment Share on other sites More sharing options...
shortlid Posted July 21, 2015 Share Posted July 21, 2015 Ok so need the more expensive direct fit one. Awsome, stupid CA! Link to comment Share on other sites More sharing options...
desertsubaru Posted July 21, 2015 Share Posted July 21, 2015 I got the Denso for my 03 Fozy off Ebay for $98 bucks, free shipping. DENSO 2349015 Link to comment Share on other sites More sharing options...
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