P1556 – Charge Pressure Negative Deviation

P1556 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1556 Possible Causes

External leak on intake or exhaust side,Faulty Charge Air Pressure Sensor,Faulty Wastegate Regulator Valve,Fualty Turbocharger

P1556 Description

Charge Pressure Negative Deviation is the generic description for the P1556 code, but the manufacturer may have a different description. Currently we have no further information abouth the P1556 OBDII code.