C5 OEM 0 Posted June 3, 2012 So had this fault for a few months now and happens 20% of the time at around 3500 revs going uphill.Mechanic has had the turbo off and cleaned and replaced the n75 and egr valves..... anymore ideas...? its driving me mad..... and with it being a sharan the access to the turbo is crap...!!! doing my head in.. 17965/P1557/005463 - Charge Pressure Control: Positive Deviation Possible Symptoms Reduced power output Limp mode Possible Causes Boost Pressure too High Hoses/Pipes incorrect connected, disconnected, blocked or leaking Charger Pressure Control defective VNT (variable nozzle turbo): nozzles stuck Solenoid Valve for Boost Pressure Control (N75) defective Possible Solutions Check Hoses/Pipes to/between Components Check Solenoid Valve for Boost Pressure Control (N75) Check / Clean / Replace Charge Pressure Control Check / Clean mechanism for variable nozzles Quote Share this post Link to post Share on other sites
Supercharged 2 Posted June 3, 2012 Change the MAF if original. So had this fault for a few months now and happens 20% of the time at around 3500 revs going uphill.Mechanic has had the turbo off and cleaned and replaced the n75 and egr valves..... anymore ideas...? its driving me mad..... and with it being a sharan the access to the turbo is crap...!!! doing my head in.. 17965/P1557/005463 - Charge Pressure Control: Positive Deviation Possible Symptoms Reduced power output Limp mode Possible Causes Boost Pressure too High Hoses/Pipes incorrect connected, disconnected, blocked or leaking Charger Pressure Control defective VNT (variable nozzle turbo): nozzles stuck Solenoid Valve for Boost Pressure Control (N75) defective Possible Solutions Check Hoses/Pipes to/between Components Check Solenoid Valve for Boost Pressure Control (N75) Check / Clean / Replace Charge Pressure Control Check / Clean mechanism for variable nozzles Quote Share this post Link to post Share on other sites
KADVR6 0 Posted June 4, 2012 (edited) see if the actuator rod is moving freely, if not its easy to lubricate Edited June 4, 2012 by KADVR6 Quote Share this post Link to post Share on other sites
C5 OEM 0 Posted June 4, 2012 Think its gonna be turbo off again and double check its all moving then pull pipes off... Quote Share this post Link to post Share on other sites
Pat_McCrotch 0 Posted June 4, 2012 Without looking i'd say turbo actuator, don't think it's separate from the turbo on the 1.9TDi but there may be a non genuine alternative. Quote Share this post Link to post Share on other sites
C5 OEM 0 Posted June 4, 2012 Without looking i'd say turbo actuator, don't think it's separate from the turbo on the 1.9TDi but there may be a non genuine alternative. think it can be separated and vac tested. Quote Share this post Link to post Share on other sites
