Apparently that is the oil vapour by-pass valve, number 3 in the pic.

I'm not sure about the peeling covering though.

 

It is very difficult to speculate what might be the cause of your CEL without knowing the DTC codes.

My early 2017 Quadrifoglio has triggered the CEL twice, on neither occasion when driving hard. Once was after battery went totally flat and the other on restarting after an hour of being parked following a gentle drive. I'm now at 22,000 miles some of which were exploiting the car to the full, albeit on road not track.

I was able to reset the CEL easily with MES each time.

Some owners have reported defective dump valves as a problem and others over tight cabling, if I recall.

My engine bay does seem to have an item, no doubt the oil vapour by-pass valve, with tape. I attach two photos. Without taking the engine cowling off, I can't do any better.

Andy

 

Just to add some data points. The oil vapour bypass valve is covered with some form of insuration held on by fabric tape and in my car and a few others I have seen at the workshop the tape is lifting and slipping off around the edges. I just repositioned mine and put a bit more tape over it. Its the heat that does it and the tech said he saw no reason why its there other than potentialy to capture any residue that might be in the vicinity.

Ive had only one set of CEL like you describe. The code was solinoid valve on one bank. MES has some notes on what to chekc inlcuing that there is enough slack in the harness and that the plug is tight. I secured everything and had a general tinker, reset the code and its never come back and that was 2000+ miles ago! I thnk the harness is tight here and perhaps moved the plug a bit which upset the system. Many were getting the actuator replaced when this happened however I dont think that was necessary and the proceedure now is either to do what i did or there is a harness extension apparently. Anyway that could be the cause or it could be different but without codes impossible to say....

 

Yes when I had a persistent CEL due to an error with the left bank actuator the first thing the dealer did was switch actuators one side to the other. Next CEL still said passenger side actuator so it clearly wasn't the actuator itself. They were then told to order the harness extension and change the plug as well. That was about 7 months ago I think and no CEL since.
Without knowing the error code it would be impossible to know what caused the CEL.

 

Hi Macca993,

I've just tried to PM you, but it seems your inbox is full.

Thanks

Andy

 

Sorry Andy. Ive sorted that out now so please resend....

 

Hello again. This is the code:

P00C0
Turbocharger/Supercharger Bypass Valve B Control - Circuit Malfunction
Status of this DTC
Confirmed DTC
Engine state when the fault(s) appeared
Freeze frame trouble code: P00C0
Fuel system status 1: Closed loop (using all oxygen sensor)
Fuel system status 2: Closed loop (using all oxygen sensor)
Calculated load value: 42,4 %
Coolant temperature: 24 °C
Short term fuel trim Bank 1: 0,8 %
Long term fuel trim Bank 1: 3,1 %
Short term fuel trim Bank 2: 1,6 %
Long term fuel trim Bank 2: 2,3 %
Intake Manifold Pressure: 0,80 bar
Engine Speed - RPM: 1092,00 rpm
Vehicle Speed: 3 km/h
Ignition timing advance: 13,5 °
Intake air temperature: 8 °C
Absolute Throttle sensor position: 0,0 %
Time since engine start: 66 seconds
Fuel rail pressure: 54,4 bar
Commanded evaporative purge: 0,0 %
Fuel level input: 41,6 %
Barometric pressure: 0,98 bar
Control module voltage: 14,818 Volt
Absolute load value: 56,1 %
Fuel/air commanded equivalence ratio: 0,999
Ambient air temperature: 5 °C
Absolute throttle position B: 0,0 %
Absolute throttle position ? 15,7 %
Accelerator pedal position ? 20,0 %
Accelerator pedal position E: 20,0 %
Type of fuel currently being utilized by the vehicle: Gasoline/petrol
Long term secondary O2 sensor fuel trim - bank 1 and 3: 0,0 %
Long term secondary O2 sensor fuel trim - bank 2 and 4: 0,0 %
Commanded Throttle Actuator A Control: 0,0 %
Relative Throttle A Position: 0,0 %
Commanded Throttle Actuator B Control: 7,5 %
Relative Throttle B Position: 5,5 %
Commanded Boost Pressure A: 0,0000 bar
Boost Pressure Sensor A: 0,9822 bar
Commanded Boost Pressure B: 0,0000 bar
Boost Pressure Sensor B: 0,0000 bar
Boost Pressure A Control Status: Reserved, not defined
Boost Pressure B Control Status: Reserved, not defined
Absolute Throttle Position G: 15,7 %

 

Hi, did you solve the problem? Because I got the same

 

Please do keep this thread up to date, as a friend of mine is also getting this code. He has had it twice so far over the space of a month and 2500 miles or so.

In his case it locks the DNA selector to N but doesn't limit power.

 

Yes, I solved ... the problem was with the wiring of the diverter valve