What does code P1557 mean on Audi vehicles?
A positive deviation in charge pressure control has been detected.
OBD-II Code Audi
P1557 — Audi — Charge Pressure Control Positive Deviation
A positive deviation in charge pressure control has been detected.
Common symptoms
- Limp mode activated.
Possible causes
- Faulty boost control valve.
Initial recommendation
Inspect N75 valve operation.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Audi code P1557 with your vehicle's actual symptoms for more complete diagnostic guidance.
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