(Your 02 sensor is okay too(no P00135?), easy to check with voltmeter using ohms?) They clog up bad and boost wont happen typically at higher rev range and cause the CEL, limp mode will always happen After that check wiring of egr, it could have been damagedĭont worry about you maf g/s etc or what boost its holding, the egr cant open enough to let the exhuast gas make the boost, after that ecu aint happy and keep it shut = no boost + CEL (they are pneumatic, quite old school stuff considering carbon deposits on valve) - you could cheap it by putting a spray down the intake neck which will burn off the carbon deposit on valve somewhat but is often short term fix but will prove its the egr as the code wont come back for a whileĮgr valve doesnt have a seperate fault code but ecu 99% of time will say its misfire or dv problem and create wild goose chases to nail it down, youve serviced dv and checked plugs/coils so egr is your next part to swap I still think its egr, switch it for a good one. None of the above works, I still get that damn P0299 error.Īny thoughts? I am a little lost this time. Tighten any hoses that have been taken off last time I serviced the clutch. Cleaned the K&N air filter and tried the OE filter, also cleaned the airbox. Serviced the GFB DV+ with new O-Ring and tried to coupled it with OE DV and aftermarket DV. Changed out the ripped intake hose connected to the turbo compressor inlet. However, if I full throttle until near redline and then shift, NO SERVICE LIGHT. Or full throttle the car until at least 4000 rpm and lift off before near the redline will also bring the service light up. Push the car up to higher rev to about 4000 rpm without full throttle in high-ish boost (above ~0.7bar) will surely bring up the service light. The service light will turn itself off as soon as there is boost after next start. My car is still suffering from P0299 problem, when the service light comes on (Engine repair needed), the car goes to limp mode with no turbo until next start.

Peugeot partner p0299