The code P0299 .Low boost abnormality diagnosis
Possible cause for this code .
- Faulty turbo or supercharger
- Low oil pressure in the engine
- Fault in the EGR system
- Air or intake leak or restriction
- Faulty boost pressure sensor
Most common is intake leaks .vacuum low and then bad Turbo .
Check the vacuum to the turbo actuator .
Check turbo boost with a gauge this will confirm map sensor readings .
Check the actuator with a vacuum pump .if does not move check actuator or turbo could be sized .
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Kind regards Greg.