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Comments
Any way, P0420 and P0430 are specific codes for three-way catalysts. Your car has 2 pre-cats and then one big main cat. You seem to have error codes, which may indicate that both pre-cats are bad. These codes are produced as a result of rear O2 sensors monitoring the amount of oxygen exiting the catalysts. Some people say that replacing rear O2 sensors is the right thing to do. I don't really know, a bad O2 sensor has its own error code... When I had P0430 code, it was really one of the cats but the dealer made me change the rear O2 sensor on it as well otherwise he wouldn't honor the warranty. The O2 was good, that I know for sure. So, I am not sure if your O2s are bad.
Bad catalysts usually smell, give your car some gas, see if you feel the sulfur smell, if you do then this is it.
Search online for Technical Service Bulletin(TSB) NTB00-070a. There is a ECM number under your hood and if it matches the ones listed in this TSB then your ECM needs to be reprogrammed. Should be around $90 at Nissan dealer. You should also check for intake and exhaust leaks as they can be the cause of these codes as well.
I am not sure if the dealer would honor my catalyst warranty since the car has >93000 miles, but as you suggest, I shall take it to the dealer to see if they say I need to replace the entire catalytic converter or change the O2 sensors.
You guessed it right again. I was getting sulfur smell when the car was parked in the garage immediately after it came back from a road trip. I had the TSB you referred to for the last month or so and was hoping that it might just be a matter of reprogramming. It does apply to my car. There was no easy way for me to locate the ECM part #. The only suspicion I have is why didn't the SES light come on now rather than long ago. It kinda leads to me to agree with your earlier statement that there may be bad catalysts or malfunctioning O2 sensors. There may also be intake/exhaust leak as you suggest.
So, I guess I will take it to a dealer and have them analyze and hope it is not the same $3000 job the other mechanic says my car needs.
Thanks a lot for taking the time to analyze my problem.
After about 120 attempts...all of a sudden...all by itself on the 121st attempt, it started perfectly. I tried it 20 times in a row after that and it started 20 times. Then the identical thing happened today. Used it all day with no problem, then at the mall, it just wouldn't start again. After 2 hours, it started just fine.
What's up with that???? Any ideas? thanks!
I realize 70k is alot for an '04 (even though it was purchased in '03), but still a new ENGINE?
My question is simple... has anyone here heard of or experienced any engine problems from the 6th generation Maximas? Thanks in advance!
PS... I'm considering purchasing an engine from eBay. Nissan is quoting me $8k for a new one. yikes!
i took it to nissan and they replaced multiple sensors, in the end they said it's "likely" the engine. i would need to pay another $400 to have them diagnose the problem and they recommended that i didn't go down that road since it would basically mean a new engine. they quoted me $8k for the engine stating "the nissan engineers helped us diagnose this". i decided to seek a second opinion from a local mechanic who specializes in engine upgrades for those who wish to race or improve performance.
i'm waiting for the second opinion. i've also starting looking for a used engine finding a couple on ebay $1k with $400 shipping. not too shabby... averaged 10k-20k miles on the engines.
The automatic temperature control is nearly worthless, however, the dealer claims it is normal.
1. Occasionally it locks on in heating or cooling and won't control. Have to shut it off to go back to normal operation
2. It won't allow cooling compressor below 60F, so on sunny days I have to go to manual mode to get enough outdoor air in upper vents to be comfortable
3. Cabin temperature is nowhere near setpoint. Had to set it at 80 on a 35F morning to be comfortable. 3 hours later, had it set down to 70 trying to cool the car in 60 ambient.
Would appreciate any feedback on similar problems and fixes.
Thanks
Kads
P0132 - Heated Oxygen Sensor 1 Circuit High Voltage (Bank 1)
P0152 - Heated Oxygen Sensor 1 Circuit High Voltage (Bank 2)
I changed out the rad side sensor(new OEM), still both same codes. If you drive this car with a light foot, no codes will be created! As soon as it's spiritedly driven these 2 codes will appear. It, very occasionally runs rough at a stoplight. My thinking is the maf sensor. Today, I cleaned the maf with some MAF cleaning fluid, but still the codes appear! Should I(or my son!) bite the wallet and spring for a new Maf or is there anyone out there that has had this problem and solved it! His 03Max has only 37K kms on it!
Anyone????
thanks, Sandy
It is also definitely possible that your MAF is bad but it would usually throw its own code, I would just replace it, it's expensive on a 93 Max since it has a heated element built in. What you can try on the intake side is clean your throttle body and check your air filter too.
So quite a substancial savings.
Read about this on a big Maxima forum.
much appreciated. He does run premium, as he occasionally listens to his dad!!! LOL! Maybe I'll suggest for him to change his gas station(although, to come home at Xmas((8 hr drive))he's filled up numerous times..... this problem with the o2 codes has been around a few months!His air filter is new!
Sandy
Thank you
Sandy
That is insane! But it is what they charge.
Let us know how the car is after the MAF and re-programming is done.
Good Luck!
On another forum, a member stated that those 2 codes actually percieve that the engine is running rich!!! WTF! Spoke with my son this am. Still the same codes (P0132,P0152) and uneven idle (possible stumble) after MAF replacement and re-program. I suppose running rich would probably be fouling plugs at idle and therefore creating a stumble at times..... He also stated that his gas milage is down, a little better after Maf replacement, but still below his norm! Anyone with suggestions on why this 03Max is running rich??? What else can I check/verify??? Any guesses???
thanks, Sandy
Coils and O2 sensors come to mind with a rough idle and poor gas mileage. they are known problem parts on 02/03
Maximas along with the MAF. The Idle Air Control (IAC) valve can also cause an unsteady/rough idle.
Good luck and keep us posted.
Recently I am getting problem with My vehicle code error "P0500" (Vehicle Speed Sensor). 1st time my mechanic got in his meter codes are P0500 and P0600.At that time he changed my Vehicle speed sensor with new VSS .
After I drove my car for 3 days again I got check engine light. My mechanic checked again on his meter and got P0500 again.He Said he will findout solution. But He did get solution.
Please Auto Professionals help me on this.
When he was checked my car, meter has reading 1700RPM and 0 MPH
Today I had my mechanic change the retainer, clutch disc, bearing and clutch cover (approx $ 300 worth of parts from the dealer) and now the car drives like new. The dealer here in NYC wanted to charge $ 660 in labor plus parts and tax, but I got a local guy to do it for much less.
Its also a good idea to have the flywheel reconditioned once you have the transmission torn down and that can be done for fifty to seventy five dollars.
Before replacing the MAF the tachometer was not getting pass 2000 RPMs even though the car was going 70MPH it just hit the 2000 rpm ceiling and stayed there. After the MAF it goes smoothly to 2200 shifts smoothly down but when you reach 2500 it stars jumping, jumping. Does not bother me that much but would like to fix it if it is cheap. If not then I'll just put black tape over the tach and forget about it.
Thanks
MACPHERSON STRUTS STINK! :lemon:
anything i cant do beside replacing the radio?
Also, remember not to put in cheap plugs; stick with NGK platinum (~$10 each).
I took my car back to Nissan and they supposily didn't hear the clunking noise, even though my husband saw the left strut leaking and four people have ridden with me heard it, the service manager is really nice though and call NISSAN and asked since I am such a good customer and the car has only 23,900 on it at almost four years old would they do a "good will" service on the struts. Nissan refused. So, I did a complaint to the goverment website on this problem and also I am writing Nissan a nasty letter with information I found on 10 pages of complaints on the struts, brakes and rotors and mailing it to them and saying I will never buy a NISSAN again. By the way my husband went to an out of town Nissan dealership and bought the struts for it, put them on and I have not more clunking noise or the steering wheel does not shimmy!