DTC P1556 Audi
Charge Pressure Control Negative Deviation
Charge Pressure Control Negative Deviation
Description
Engine started, battery voltage at least 11.5v, all electrical components off, ground connections between engine and chassis well connected, coolant temperature at least 80-degrees Celicius. The ECM detected deviation from the normal operating parameters of the charge pressure sensor.
Cause and Solution
Charge air system leaks
Recirculating valve for turbocharger is faulty
Turbocharging system is damaged
Vacuum diaphragm for turbocharger needs adjusting
Wastegate bypass regulator valve is faulty
Video Guide
Diagnostic Info
- DTC Code: P1556
- Brand: Audi