Audi P1557: Charge Pressure Control Positive Deviation
Is your scanner showing Audi P1557?
No worries. We'll show you what it means and how to deal with it.
Audi P1557: Charge Pressure Control Positive Deviation
OVERVIEWWhat Does The Audi P1557 Code Mean?
This code indicates the condition that:
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 Celsius. The ECM detected deviation from the normal operating parameters of the charge pressure sensor.
What Are The Potential Causes Of The Audi P1557 Code?
Below are some potential causes of this DTC:
- Charge air system leaks
- Recirculating valve for turbocharger is faulty
- Turbocharging system is damaged
- Vacuum diagramfor turbocharger needs adjusting
- Wastegate bypass regulator valve is faulty
- ECM has failed
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Dorman 911-240 Turbocharger Diverter Valve
>>> Audi Engine Control Module
>>> Autobahn88 Silicone Vacuum Hose Dress Up DIY Kit
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
- Audi of Ameria, 2002, Technical Service Bulletin – Diagnosis of Driveability Complaints on Turbo Charged Engines.
- Audi A4 Avant 95-01 Service Repair Manual, page 56.
