Question about 1996 Nissan Maxima

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Codes will not clear

Changed knock sensor and 02 and heat sensors driven over 200 miles last code will not clear

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Try clearing it with an OBD 2 code reader reader.

Posted on Feb 09, 2009

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04 Altima 2.5 s w 150k changed cat 2014 1 yr later p0420 code again what r normal reads for 02 sensors? reads @ idle fluctuate @ .3V b1 sensor & .8V b2 sensor.anyone had p0420 that wasnt a bad cat


Those cars are notorious for engine problems unfortunately. The exhaust valves tend to warp from heat after around 200k miles. Therefore throwing the O2 codes. Best outcome and cost effective thing I can recommend is replacing the engine with a new or low mileage engine.

Feb 18, 2015 | Cars & Trucks

1 Answer

My 96 maxima wont pass emissions in az after replacing 02sensor and knock sensor.do i need to drive it to reset comp?


I would say 10 to 20 miles would be enough to tell if the trouble codes will return. You may be able to disconnect the battery for a couple of hours to clear the codes, but using a scanner or code reader is better.
A scanner or code reader can find history trouble codes on some models and in some cases without the engine light being on.
The purpose of the warning light is to tell the driver the vehicle needs attention now.

Aug 04, 2012 | 1996 Nissan Maxima

1 Answer

How many miles do i need to drive to have the computer re-ready to accept obd codes?


200 miles is more than enough. p0420 is a cat code meaning the cat in the exhaust is not doing its job. you need to make sure there are no exhaust leaks before the downstream (last one) o2 sensor. if you can get all but 1 monitor to set without the check eng light coming on, you will pass pa emmissions.

Jun 30, 2012 | Suzuki Cars & Trucks

1 Answer

1996 maxima 02 sensor and knock sensors have both been replaced with new parts. car has been driven over 200 miles. how many miles untill system resets to pass emmissions ??


with a hand held diagnostic computer it can be done in about an hour. Drive the car as an owner it could take up to a month. It is the driving condition , not mileage that resets the ECM. You have to drive on the highway at certain speeds for a certain amount of time, then in city driving, stop and go and at certain speeds for so long. The computer guides you threw it. If you only drive city or highway you may never get it to reset.

Aug 31, 2011 | 1996 Nissan Maxima

2 Answers

Sensors not ready 2001 Chevy S10. I have driven more than 500 miles and sensors still read not ready. 02 Sens Not Ready, 02 Sens Htr Not Ready, Catalyst Not Ready.


This is the heater side of the sensor. It has shorted out. You can replace it, but check for broken or melted wires (around the exhaust).

Aug 19, 2011 | 1996 GMC Yukon

1 Answer

Installed 02 sensor 2 bank 2 and 02 harness connector due to 02 heater inop. cleared dtc customer can`t run through emmissions test.because the catalyst monitor has not run yet.after 200 miles of...


Let's see if I got this right.The vehicle can't be driven because of legal issues with the emissions test, and it has to be driven 200 miles before it can be tested. Talk about your catch 22. Jack that thing up, put it on jack stands, fire it up, put it in gear, and watch the miles add up.

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1 Answer

Error code P0430 rear catlytic converter where exactly is this located and what does it look like and estimated price?


just a word of advice there is no sensor that tells you if you need a cat ! that code comes on because of faulty o2 sensors have you changed the 02 sensors yet ? if not change them reset ( clear ) the codes that code will come on a few times just keep resetting or clearing it i have had 2 co workers not listen to me and changed the cat 400-600 dollars and the code just comes back on one guy had the cat changed two times and the code came back after i reset the codes 3 times it stayed off it seems like its preset to come on around 100,000 miles with 02 sensor codes DONT LET THE MECHANIC SELL YOU A CAT hope this helps

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Trouble code 43. 1993 C 1500 5.7 automatic


code p0043 is the heater circuit on bank 1 sensor 3.

This should not give you a drivability issue. Its the 02 sensor after the cat. When you get a heater code it always 99% of the time points to a burnt out heating element just like a house dryer does.

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2 Answers

Check engine light keeps coming on...test says its from the knock sensor...sensor has been replaced, but check engine continues to come on...have always used premiun gas...do have a airaid cold air...


it could be that the wiring to or from the knock sensor has a prob. also after the knock sensor was changed was the code cleared? if it was not it may be a inactive code that stays in the computer causing the light to stay on...

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1 Answer

99 volvo v70 02 sensor....


Either get a OBD2 electronic reader and clear codes or try disconnecting battery for five minutes to reset. Good luck.

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