P0022 help! At a loss

Hi all

I need some help diagnosing an issue with my Tacoma 1GR-FE it's throwing a P0022 Camshaft Bank 2 Intake camshaft retarded. See the list below for the thorough diagnosing, we've done pretty much everything
We purchased the truck a couple weeks ago from out of state and the previous owner was hiding a check engine light from us and we forgot to check the codes before purchasing. The check engine light has to go out so we can get it smog checked, and registered and we're racking up fees right now.

I have tried the below and P0022 still comes back :

Reset check engine light.
Swapped camshaft position sensors from bank 1 to bank 2
Installed new camshaft position sensor bank 2
PO replaced Bank 2 Oil Control Valve
Swapped OCVs from bank 1 to bank 2
Checked continuity & resistance on OCVs and cam sensors - OK, 0.04 ohms
Tested OCVs with 12v - operate correctly and return to position
Inspected timing - all marks lined up at TDC
Cleaned OCV filters bank 1 & bank 2
Removed engine oil pan & cleaned pickup
Replaced Bank 2 VVT sprocket
Verified Bank 2 VVT sprocket unlocked using air directly to camshaft
Re-did timing on the engine - all marks line up at TDC
Bank 1 VVT active test - engine stumbles
Bank 2 VVT active test - no change
Tested Engine Oil Pressure at filter housing at operating temperature 185*F :
Idle RPM - 26 PSI
3000 RPM - 63 PSI
removed and inspected camshaft journals, pristine and have no wear marks

My current theory is oil pressure must not be making it from the oil filter housing to the camshaft but I haven't seen any signs blockages.

let me know what you think I'm at a loss.

2009 Toyota Tacoma 4L v6

 

This stands out.

-Bank 2 VVT active test - no change-

Have you checked the wire integrity to the ECM?
It appears that you don't have control of the VVT control valve.

Was the OCV replaced?

 

I'd check the wiring to the OCV.


OCV Connector.



ECM E9 Pinout


E9 Location at ECM


OCV Waveform

 

Good idea on checking wiring although I would expect it to set a P0020 (Camshaft Position "A" Actuator Circuit (Bank 2)) code if a wire was broke.

Have you tried jumping power directly to the solenoid with the engine running and see if it stumbles/stalls?

 

I glad you are here.
I have a massive head ache.
Mulching leaves has got my sinus all messed up.
I was hoping you'd jump in.

 

Testing was done with 12v power from the battery and did not stumble or stall. Must be an engine issue. It has continuity and nominal resistance on the 2 VVT solenoid wires and 3 camshaft position sensor wires.

 

If you jumped power and ground to the solenoid with it running and nothing happened then it can't be anything other than a faulty/incorrect OCV, faulty/incorrectly installed VVT gear, or clogged oil passage(s).

Sounds like you pretty much ruled out the first 2, I can't see what would clog the oil passage unless the engine is super sludged up from lack of oil changes.

 

What did the OCV filters look like when you cleaned them, is the motor clean inside?

 

I believe there are some oil passages in the camshaft. But you have to remove a cam cap to get to them.
Not sure how involved it is to, "take a look".

If what we know so far is true, parts are coming off anyways.

 

We are confused as well. The carfax we ran showed it had consistent oil changes every 5000 miles at the dealership its whole life. The engine looks really clean for a car with 240k miles.

 

Here is pictures to show how clean it is in there

 

Wow that is really clean, I can't see how anything would be plugged unless some foreign object got in from some previous work.

Did you try blowing air through all the passages when you had it apart?

 

We already checked the oil passages in the cam shaft with air and break clean and it was clear. We are going to check the other oil passages tonight from underneath the cam cap to the ocv and will update after that

 

We just checked the passages from the ocv to the cam cap and they were perfectly clear

 

Something is definitely amiss here, your certain the OCV is good and installed correctly?

You mentioned you swapped OCVs bank to bank but I'm not sure how as the mounting tabs are different.

 

Something is off for sure.
The oil has to be getting to the cam.
The cam lubes the caps. So the cam would have locked up in the caps/bearings if it wasn't getting oil.

The cam is feed oil through the REAR cap.
Then through the cam to each cap, and into the phaser on the front of the cam.

 

You don’t have to have the mounting tabs bolted down, they just need to be clocked.
The ocv is installed correctly, and you can switch them bank to bank if you clock them correctly by rotating the bracket rearward. All of the oil passages line up. I was able to get bank 1 to stumble using the bank 2 ocv so it’s known to be good

 

Rear cap feeds the oil

 

I think what I would do is pull the OCV out, pull the EFI relay so the truck won't start, and have someone crank the engine over while I look down the hole where the OCV goes and see if oil comes out of the port.

 

That’s a good idea, we’ll try that tonight and get back to you, thanks