Thread: car is giving me 5 codes

P0102-mas/maf
P0108-map/maf
P0121-tp sensor
P0141-o2 sensor
P1406-some other sensor

So what do you guys think I should start with, my check engine light has been on for awhile but I never did anything. Do you think all of the sensors just happened to go bad or do you think it could be some other problem? This post caught my eye since it involves some of the sensors so I checked the fuses but they're fine but im not sure which wires to check. So what do you guys think?

Originally Posted by Reptile

Check wiring, mainly on your O2 sensor. The TPS, MAF, O2 share a common fuse because they all work together. If a wire is grounding out, it cold blow a fuse as well. Might check in the under hood fuse box I think it's engine cont 1 & 2, location 25-26 or something like that. If you have a Powertuner, you can check your MAF frequency, O2's etc to make sure they look like they're operating like they should. If something doesn't look right, you can start looking there.

Check the wiring. That seems like an awfull lot to go bad at once.

Originally Posted by TDCRacing

Check the wiring. That seems like an awfull lot to go bad at once.

Well like I said The check engine light has been on for quite a long time but I never did anything about it. So I don't know if they all went at the same time or they have just added up. How should I check the wiring, is there a place where they all come together? Or should I just check all of the connections and such?

if it's been going on for a while then it's possible that those things are messed up man.. fuses are in the engine.. and behind the glove in my car.. if the fuses are good.. replace the tp sensor.. if that code goes away.. then replace the maf and o2 sensor.

take it off.. spray the crap out of it with throttle body cleaner.. watch the gunk drain out... use a gasket maker when putting it back on.

ok thanks, I can't wait to sell this thing so I can get a GTP.

Ok I put my new stuff on and my check engine light is off so we'll see how long that lasts. I cleaned my egr valve today but im still getting the p1406 code, so does anyone have any ideas on that?

you're gunna have to replace the egr man

Well I dont think im gonna even worry about it since im about to sell the car. If it caused the check engine light to come on then that would be a different story.

true

Well im still getting the p0141 o2 sensor code and I have replaced the sensor twice. The first one I pulled from the junkyard and the 2nd I picked up from morad so I guess theres a possibility they were both bad. I think im gonna need to check over the wiring, any tips or other ideas?

buy new lol

Originally Posted by NaturallySmashed

buy new lol

Looks like thats the case, wiring is good and its also getting power back there.

yeah that would be your best bet man. might as well do it before you sell the car.. it would be worth it not to have the SES light on.