Passat B6 2.0(2009) limp mode on high RPM

Alandal

New member
Joined
Mar 17, 2023
Location
Bosnia and Herzegovina
TDI
Passat B6
Around two months ago i did a remap on my Passat B6. Two weeks later after that my car suddenly stopped and it turned out the High Pressure Pump was full of metal parts so I had to replace the pump, 4x injectors and the fuel filter.

The car run fine for a week then suddenly in high RPM(around 4000) it goes into limp mode with glow plug light flashing. The code was P0088. I went to the service and they replaced the fuel pressure regulator. Again the car was running fine for around a week i noticed power loss and then again at high RPM the car loses power this time without glow plug lights flashing, the RPMs drops to 2000 then it again works fine.

I also changed O2 sensor few days ago.

Could this problem be because of the remap or what couls be the issue?
 

balecis

New member
Joined
Mar 23, 2023
Location
Romania
TDI
07' Passat B6 2.0 BKP
When I had that issue it turned out to be the turbo's geometry and after refurbishing the turbo the problem went away.
 
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