Bank 2 sensor fault code.

Has anyone had a reoccurring Bank 2 sensor fault code P0345 on their 1GRFE 4.0 l engine? Mine through the code last year so I changed the cam sensor and since then it came back a few times within seven or eight months. It doesn't affect the engine or performance that I can tell in any way. I read somewhere that I should check the VVT solenoid filters. apparently, if they're clogged up or gummed up with sludge this can cause this issue. Has anybody else had any success cleaning the filters out and not having the check engine light come back on?

 

What is the code number your getting?

 

P0345

 

That's a general signal error from the cam sensor, either no signal or a invalid signal.

VVT screens/solenoids typically will cause P0011, P0012, P0016, P0018, P0021, and/or P0022 codes.

I have seen where pieces of the cam reluctor break off and cause P0340/P0345 codes, easy to check if you have a borescope. Pics and scope captures can be found here.
https://www.tacomaworld.com/threads/4-0l-scope-captures.759406/

 

Thanks for the info. It's very random, I can drive it for several days and have no issues at all and then it just pops up. One thing that I did notice after installing the new one was that I did have a slight gap in the sensor. It wasn't mating completely to the valve cover I was thinking that there must be a specific air gap between the sensor and the cam reluctor ring. I did find out that it was not seating completely because of the opening where the opening is located had a little bit of that white powder buildup from the aluminum oxidizing. I was able to clean that thoroughly then grease the O-ring and it's seated completely flat now. I'm hoping this will take care of the issue, if it comes back I'll look into it more. I'm just hoping it's not a stretched timing chain. The engine has 249,000 miles on it now. I've even read here on Tacoma world that a faulty battery can cause this engine to throw a P0345

 

That could certainly have been it, excessive airgap on a hall effect sensor can cause an erratic signal.

As long as you aren't getting timing codes and you don't have a timing chain rattle on startup you should be fine, timing chains on the 4.0L are pretty robust as long as oil changes are kept up with and a quality oil is used.

 

No timing chain rattle at startup at all and this engine has been meticulously maintained and has had oil changes on time with full synthetic.