Running rough, limp mode, fault codes, heeeellllppp!!

[Chino_UK]

Right. Unfortuantely had to put some petrol from Total in my car last Saturday. Car has run like a bag of spanners ever since. Misfiring, hesitating, limiting boost etc...is showing several fault codes but no actual engine management light:

16621 - Manifold Pressure / Boost Sensor (G31): Signal too Low

Occasionally get 16622 - Manifold Pressure / Boost Sensor Signal Too High

18000 - Altitude Sensor / Boost Pressure Sensor: Implausible Correlation

I'm guessing it's plausible these could all be caused by the misfires from the petrol?

I have been topping it up with VPower at every opportunity, and it has slowly started running smoother. My only concerns are if it has bust a sensor along the way.

Any thoughts?

Thanks in advance.

 

[Chino_UK]

OK, new code to add to that list:

16517 P0133 O2 Sensor Circ.,Bank1-Sensor1 Slow Response


MAF Sensor?

 

[Chino_UK]

Right so after some more research, that looks like Lambda sensor?

 

[Random1989]

did you manage to solve your problem ?
im getting a problem with mine when the boost hits 0.5 it stops there and the car makes a strange like on off noise

 

[Yosh]

Chino: inspect your MAP sensor and depending on the fuel you are using, your lamda 1 is starting a slow death...Clear the DTCs and check which ones come back...

 

[Chino_UK]

it was the MAP sensor guys, was full of water and giving loads of mad readings! lol

 

[Random1989]

fixed the car and just let you know it was the sparkplugs i installed denso iridium power spark plugs only thing i can think of is that the new ones were pulling too much current from the coils and the ecu didnt like it.