Fault code P0244 – a step-by-step guide to diagnosing and fixing it

Error code P0244 is displayed and the check engine light is on - what does this mean?

The OBD system detects a fault in the turbocharger wastegate control circuit, or more precisely, too low boost pressure (range/performance low). This DTC P0244 mainly affects the turbocharger system and the associated control components. The code may have slightly different names for different manufacturers, but always refers to problems with the boost pressure control.

What causes can this error code have?

• Defective wastegate valve on the turbocharger
• Damaged vacuum hoses to the wastegate
• Faulty boost pressure control (N75 valve)
• Clogged air filter or intake tract
• Defective boost pressure sensor (MAP sensor)
• Leaks in the intake system
• Worn turbocharger vanes
• Faulty engine control unit (ECU)
• Clogged exhaust manifold
• Loose or corroded plug connections

What symptoms occur in parallel with fault code P0244?

• Loss of power: Significantly reduced engine power, especially at higher engine speeds
• Poor acceleration: The vehicle accelerates sluggishly and hesitantly
• Increased fuel consumption: Noticeably higher consumption due to inefficient combustion
• Unsteady idling: Engine runs unevenly or stutters at idle speed
• Black smoke: Dark exhaust fumes from the exhaust, especially under load
• Whistling noises: Unusual noises from the engine compartment when accelerating
• Emergency running program: Engine switches to safety mode with limited power

How can the problem with fault code P0244 be rectified?

• Repairing fault code P0244 requires a systematic approach to identify the exact cause.
• Complete inspection and cleaning of the intake system: change the air filter, check all intake hoses for cracks and leaks, clean the throttle valve and ensure that no foreign objects are obstructing the air flow.
• Repair wastegate valve and vacuum system: Remove, clean or replace wastegate valve on turbocharger, replace all vacuum hoses, replace N75 boost pressure control valve and check function of entire vacuum system.
• Turbocharger overhaul or replacement: If the blades are worn or the turbocharger is defective, carry out a complete overhaul or replace the turbocharger with an exchange unit, also renewing the oil and coolant lines.
• Diagnose sensors and electronics: Test MAP sensor (boost pressure sensor) and replace if necessary, check all electrical connections to the turbocharger system, check engine control unit for software errors and reprogram if necessary.
• Clean and repair the exhaust system: Check exhaust manifold for blockages and clean, clean or replace exhaust gas recirculation valve (EGR), check entire exhaust system for leaks upstream of turbocharger.