codes.. what do they mean?

I don't know much about trucks and I don't have the money to take it to a shop. It's a 2004 Toyota tundra limited v8 4.7 and the check engine light has been on since my dad passed in 2020. or maybe even before that but that's when I inherited it. Anyways, its throwing 6 codes right; P0154, P0330, P0153, P0128, P0325, and P0051. I think they all have to do with sensors so Im wondering if there's one thing that could be throwing them all off or if its different things. I also know that most of them come back to bank 2, sensor 1. Any help would be greatly appreciated! And if you need anymore info please let me know! TIA!

 

Are you mechanically inclined at all? If not, the knock sensor code will most likely land you in a shop

We have seen in the past where people "know somebody" who works on cars and they end up getting left high and dry with a truck torn apart without having a way to put it back together

Can you Google each code, and then post what each one is as an individual reply for each?

That will help us troubleshoot this for you if we can quote each issue separately, which in turn will give us a clearer view of the overall status of your truck

I'm sorry about your dad

 

Most of those relate to the Bank 2, sensor 2 oxygen sensor. Considering the age I'd swap out all 4 oxygen sensors with new Denso units and see what comes back.

One code is Bank 2 knock sensor, the knock sensor may just be going off from a bad fuel mix from the oxygen sensors. The other one is for low coolant temp, could be a bad sensor or a thermostat stuck open.

 

Knock sensor, probably rodents nesting under the intake manifold.

O2 sensors, maybe bad? Only use Denso brand DO NOT use any store brand, only Denso brand (and don't buy them on scAmazon or fleaBay).

Coolant temp sensor code could be because the plastic body has disintegrated, another place where I'd only use Denso brand. I think on the '04 they were still using two temp sensors on the passenger side of the throttle body, one for the ECU to read (green?), one for the dash gauge? It'd be the one the ECU is reading.

However, bad ground/wire issue could explain all the codes. It's a tough one. I'd take it to a Toyota-specific shop that's not a dealership. You don't want to mess around with the O2 upstream codes, if you end up running rich or lean too long, you can clog your cats and that's $$$$$.

 

Time to start wrenching!
Watch

https://youtube.com/@fayehadley?si=y6J9ic8AywarbcKY

https://youtube.com/@timmythetoolman?si=LMOr89g737NCQ9ZY

Are the 2 I highly recommend. Some would say Car Care Nut but he's a Toyota simp and not one to give unbiased reviews or advice. He's smart AF but again, simps for Toyota, so I don't trust.

the other 2 are some of the best they've helped me and a ton and I've actually worked on cars/trucks

good luck!

 

That knock sensor code is one I dealt with. It will necessitate removal of the intake manifold. Only use OEM or Felpro gaskets for that, and follow the proper torque down procedure.