Engine Management light on

[Kevgrady]

well...... driving home one night and no turbo at all???? went out this morning for a drive and then turbo was back and then the engine management light came on. got it put on the diagnostics and it read "17964 turbo pressure control".

any ideas?

 

[Chemical Al]

17964/P1556 - Charge Pressure Control: Negative Deviation

Possible Symptoms
Reduced power output
Limp mode

Possible Causes
Boost Pressure too Low
Hoses/Pipes incorrect connected, disconnected 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

 

[Kevgrady]

ive been told the boost is too high but i havent touched it since i baught it 7 months ago has any body with an ibiza cupra 20vt got a pic of there's so i can compare?

 

[Chemical Al]

pic of what to compare what?

 

[Kevgrady]

the boost valve?