There are several reasons
seized big end/main bearings
dropped valve or insert
broken rings
bent conrod/s
fuel/ water on top of a piston on compression stroke --remove the plugs
pistons jammed in cylinders from overheat
broken flexi plate in bell housing
failed torque converter
broken timing belt/chain
external unit ( power steering pump,ac compressor ) locked on drive belt
as you have not bothered to give any previous warnings before it locked up ,then take your pick
SOURCE: Check Engine Light 1996 Nissan Maxima
The best way is to use a scan tool to clear the codes, that will turn off the light, also disconnecting the battery over night may work, but no completely sure about that, it varies from year to year.
SOURCE: 1996 Nissan Maxima GXE Fail Smog Check Due To ECM System Failure
Working on one right now and hooked it up with a Snap On Solus scanner - It gives P0135 for 0/2 sensor bank 1 sensor 1. Check the 0/'2 sensor function and replace as necessary
SOURCE: 1996 Nissan Maxima oxygen sensor
hye there ,,there are 3 o2 sensors on your car,,one for each bank,,,and the 3rd sensor is located after the cat this one usually goes first,,,,just make sure you no if your cars an import or not as they can be different,,,then you should be safe when ordering ,,hope that helps,,,
SOURCE: 1996 nissan maxima check engine
Firstly, the code p1445 is actually an EVAP Canister Purge Control Valve...The most common problem is a failure of the valve itself, which is located at the top of the plenum chamber. Nissan offers a replacement valve with new bracket and hoses. It is around the $150-$200.00 mark.
But, remember to test the component (valve) first as this suggestion is just to the common problem, but in rare cases, it might be PCM related (water entry, shock etc)
Secondly, the p0500 code is a speed sensor and you can pick these up from autozone.....it provides the road speed for the speedometer and odometer..........if these are working fine, then you might have a wiring issue.
As these are 2 seperate systems, I doubt that they are related.
I hope this helps
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