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VAG Error Code: 17964
EOBD II Error Code: P1556
Fault Location:
Turbocharger (TC) pressure - control limit not reached
Possible Cause:
Turbocharger (TC) wastegate regulating valve.
Intake leak.
Turbocharger (TC) defective.
As taken from my Free EOBD II Error Codes software
VAG Error Code: 17964
EOBD II Error Code: P1556
Fault Location:
Turbocharger (TC) pressure - control limit not reached
Possible Cause:
Turbocharger (TC) wastegate regulating valve.
Intake leak.
Turbocharger (TC) defective.
As taken from my Free EOBD II Error Codes software