[i86hotdogs]

Hey gang, I've read about these codes on other Mopar forums with the same Multi-Air engine. All with very vague answers that basically instruct you to "take it to the shop". But I'm here to learn a bit and figure out exactly what the root cause is, and what the shop will actually be working on.

OBD pulled 4 codes
P106B-Cylinder 4 oil supply solenoid valve switch on time out of range
P1064-Cylinder 4 oil supply solenoid valve stuck
P0520-Engine oil pressure sensor circuit
P0304-Cylinder 4 misfire

Fairly certain all 4 codes pertain to the same issue. From what I've read, the oil supply solenoid is called something else in the field: Variable Valve Actuator. Quick google shows a full subassembly piece ranging from $500 (ebay used) to $1,100 (mopar new). It also looks like a pain in the butt to replace. Involving dropping the front cover, everything on the top end, and a whole nine yards of labor. I can't seem to find an actual repair procedure for it. If anyone here has access to that, I'll buy you a beer or two.

Would it be worth swapping just the pressure sensor to see if this rectifies the problem? That's a much easier and less expensive fix than the actuator

 

[200_S_AWD]

Always diagnose first. 3 of the 4 fault codes have to do with the #4 cylinder. Has it got the correct viscosity oil in it & is the level & condition OK? The P0520 may be electrical or the part itself. A PCM problem would be rare & unlikely.
The MultiAir Actuator assembly can fail, but it isn't my first thought. Rule out what the problem 'isn't'.

Engine Oil Viscosity (SAE Grade) — 2.0L, 2.4L Engine
MOPAR SAE 0W-20 engine oil approved to FCA US Material Standard MS-6395 such as Pennzoil, Shell Helix or equivalent is recommended for all operating temperatures. This engine oil improves low temperature starting and vehicle fuel economy.
The engine oil filler cap also shows the recommended engine oil viscosity for your engine. For information on engine oil filler cap location, refer to “Engine Compartment” in this section.
Lubricants which do not have both the engine oil certification mark and the correct SAE viscosity grade number should not be used.

Synthetic Engine Oils
You may use synthetic engine oils provided the recommended oil quality requirements are met, and the recommended maintenance intervals for oil and filter changes are followed.
Synthetic engine oils which do not have both the engine oil certification mark and the correct SAE viscosity grade number should not be used.

Materials Added To Engine Oil
The manufacturer strongly recommends against the addition of any additives (other than leak detection dyes) to the engine oil. Engine oil is an engineered product and its performance may be impaired by supplemental additives.

If you are on the list for the oil consumption or catalytic converter recall, has it be performed? Any oil leaks?
Read the 'Possible Causes' to see what the faults may have in common. This should give you a plan of attack for troubleshooting the 'root cause'.

 

[i86hotdogs]

All great info. The vehicle has the correct viscosity type with the correct quantity using an oil filter that cross references OEM part # (Wix brand). I initially thought to first replace the oil pressure sensor to see if that remedies the others. I read on another mulitair forum that the #4 misfire derives from the other two codes for the actuator.

 

[200_S_AWD]

It can. As long as the wiring & connections to the sensor are OK, it may need a sensor.
All oil pressure-actuated component faults depend on the correct signal from the sensor.
Look for one that calls itself OEM.

 

[Dorius]

Hey gang, I've read about these codes on other Mopar forums with the same Multi-Air engine. All with very vague answers that basically instruct you to "take it to the shop". But I'm here to learn a bit and figure out exactly what the root cause is, and what the shop will actually be working on.

OBD pulled 4 codes
P106B-Cylinder 4 oil supply solenoid valve switch on time out of range
P1064-Cylinder 4 oil supply solenoid valve stuck
P0520-Engine oil pressure sensor circuit
P0304-Cylinder 4 misfire
...

Change the ignition coil and spark plug with the 3 cylinder to rule out the simplest.

 

[200_S_AWD]

The spark plug & coil might cause a #4 misfire, but shouldn't have any influence on the #4 oil supply solenoid or sensor faults. I think that something is going on with the oil pressure sensor and/or the Multiair system.