New Taco owner need some help...

Hey everyone!!


So I just got myself a 2014 Tacoma PreRunner 2wd DBLCB V6 w/124k miles. Purchased from non-Toyota dealer and think I got screwed a little bit. But my fault for not being through. Past return date so that's my fault for not being through.

NOTE: I am ok with replacing things myself. I may not know the technical names or terms for parts, but I am comfortable replacing things and doing work myself, and have been for for quite a while. So I apologize if my question is dumb.

I took the truck to a Toyota dealer to get the 100K mile service and was told the A/F sensor is popping sporadic codes and will need replaced. $650+ is cost, but figured I could do it myself.

This is what was on my paper work:

DTC P045D Replace A/F Sensor Bank 2 Sensor 1 Left Rear.

Ok, thats a bit confusing. Atleast to me. I looked online and the P045D code looks like it refers to the EGR system...? But then there is the A/F Sensor information.

Anyone have any insight to this?

Also, sorry if I posted this in the wrong forum. I am new to this forum and new to Tacos.

Thanks ya'll!

 

A/F sensor looks just like an O2 sensor. It shouldn't cost that much. You can get one at Autozone for about $80. The A/F sensor is before the catalytic converter. The sensor after the catalytic converter is the O2 sensor. There should be 2 sets, one on the left exhaust manifold and one on the right exhaust manifold. Bank 1 and Bank 2 refers to the left or right side, but I forgot which is which.

 

The A/F sensor is the O2 sensor before the Cat, closest to the manifold. For replacement, stick with Denso. I would also recommend cleaning the MAF sensor and TB, clearing the code to see if you need replacing the AF sensor. Take your truck to autozone to have the codes rechecked. Not familiar with a P045D on tacomas unless you meant P0455.

https://www.tacomaworld.com/threads/how-to-throttle-body-cleaning-2005-v6.94203/

 

Thanks for the input!!

 

@Wattapunk I am confused with that code. I looked that P045D code up and it refers to an EGR control circuit. Ive reached out to Toyota to ask them what it meant, but no response. Probably should call instead of email LOL.

I did find this video about sensor locations:

https://www.youtube.com/watch?v=_AY3A112kwE

 

Welcome to The Forum!

 

Welcome and stick with Denso brand for O2 sensors !

 

I would still give you the same advice as above. Start with the cheap route of the MAF sensor/TB cleaning and clear the code and have it check again if it comes back on. Another area you need to check while you have the hood open is the condition and connections of the vacuum hoses. Are there any driveability issues such as misfire, idling/acceleration, etc..?

 

Just got out from under the truck and holy crap, I got skinny arms but that sensor is going to be a pain to replace. I will definitely clean the MAF and TB. Probably should pick up a ODB scanner while I am at it so I don’t need to rely on going to an auto parts store or the dealer.

Drivability has been fine. There is a minor rough idle from time to time and a bit of engine shake(?) when driving around 40mph.

I am really hoping these are just normal things with a 124K I’ll truck and I didn’t just get royally screwed with buying this truck...

 

Go rent or buy an O2 sensor socket. Never use a regular wrench or socket to attempt to remove it. You will be royally screwed if you round out the sensor. Spray some liquid wrench on it to help loosen it up.

 

If its the sensor on the driver's side remove the bracket from the transmission that is in the way there an it will be much easier.

 

I have a couple different styles and they both suck. I use a box wrench, 22mm if I remember correctly.