Help with codes

Where should I start? I have p0100, p0110 and p0402

Maf is clean, all of the connections are tight, new oem tps and iac has been cleaned.

I recently had a drivabilty issue, it was a corroded A/F sensor connection. Sensor is also new and oem. I don't think the codes are related to that.

Is a new oem MAF a good place to start? I have live data of the maf, it seems to be slow. But I'm unable to change units of measurement on the scanner I have on hand.

 

P0100:


p0110

 

P0420

 

The cheapest part is that little pointy sensor that plugs into airbox
Check tht 1st

I left/forgot about this airbox sensor after a wrench session, code popped for me
Plugged in and connected
I was good

did all 3 codes pop at same time?

 

Po402 or po420?

Po420 is a common catalytic converter/o2 issue with Toyota's alot. Inspect/clean the gas cap as a basic 1st ez possible fix. The po420 is also possibly a side effect of the other 2 codes.

Clear the codes

A way that somerimes will show a bad maf sensor is to unplug it. If a previously bad/searching idle is somewhat changed for the better its a good chance the maf is bad. They are delicate and can't always be cleaned.

 

Thanks I'll start looking into it.

Yes all 3 codes came up at once, no drivabilty issues. Idle is a little high 900ish. But I think it might still be relearning the IAC being clean.

The code is 402, not the 420 cat code.

The maf was cleaned with the specialty MAF cleaner.