I have a 2001 Nissan maxima gle not ready for smog cat inc drove 6 months not ready show $03 failed, no engine light ,no codes

when you change a component in emissions it changes and clears the ready back to inc so you would need the system to cycle through to get it into ready mode dont change any thing just need to put mileage on it or try a quick cycle https://www.smogtips.com/smog-question/2833/2001-Nissan-Altima-OBDII-Monitors-Not-Ready

code p 0432 is main cat converter bank 2 --efficiency below threshold ===causes -- cat converter---wiring heated oxygen sensor (HO2S ) in the bank 2 manifold before the cat converter
ave a compression test done to determine inlet valve seat insert loose
if you have a problem with it there should be a bit of a miss, or it should change with rpm
could be a cam lobe failing and the noise should change with rpm

A code P0300 may mean that one or more of the following has happened:

• Faulty spark plugs or wires
• Faulty coil (pack)
• Faulty oxygen sensor(s)
• Faulty fuel injector(s)
• Burned exhaust valve
• Faulty catalytic converter(s)
• Stuck/blocked EGR valve / passages
• Faulty camshaft position sensor
• Defective compute
• P1105MAP/BARO Pressure Switch Solenoid Valve
• Check and clean the MAP sensor, or replace.
• P1492EVAP Canister Purge Control/Solenoid Valve (Circuit)
• Replacing the purge solenoid will clear code P1492 This should also clear code P0300 as well.
  

If your`check engine light is on, have the codes read to find out what is causing your transmission problems, but yours seems to be a common problem, the usual symptoms of a failed speed sensor in the 00-03 maxima. Have it checked out.

i have a 2006 nissan maxima 6 spd. when i purchased it there was 89,500. i replaced the clutch disk, release bearing, pressure plate and added a brand new flywheel(from the nissan dealer). a few days afterwards, the check engine light came on with a P2A00 and a P0420. when replacing the clutch kit i had to remove the exhaust system. i thought that i did not correctly install the exhaust system. after many inspections, i did do a good job installing the exhaust system. at this point i replaced the upstream, bank one oxygen sensor(a pain in the rear). i pray for God to lead me to the problem. don't try this at home but i jacked the front of my car up and rested it on jack stands and chock the rear tire. i started the engine and got under the car under the engine. i heard an exhaust leak at the bottom of the bank one, rear catalytic converter. one that catalytic converter, it has a small heat shield tack welded at the bottom. after taking that heat shield off, i found that the two tack welds at the top of that heat shield had broken causing an exhaust leak. THANK THE LORD! after plugging those holes and drive my car normally for the next two days, the check engine light when off. problem solved!

sounds like solenoid on starter is worn, replace starter.

I had the shaking problem too, had the #5 coil replaced and the shaking instantly stopped.

Primary ignition fault. Reasons: Bad distributor cap (most likely) or ignition control module/ignition coil.
Hope that helps
Good Luck

There is no way to fix this issue according to my Nissan Dealer Service Manager. The monitors will not run and therefore the vehicle will not pass smog. If you need assistance from California's SMOG authority they are called "The Referee" and you can call them at 1-800-622-7733.

well it can be one of two things 1. your oxygen sensor 2. your cats are bad....just call your home town autozone and tell them the trouble code and they can tell you what it is....so good luck...