P1557
Charge Pressure Positive Deviation
P1557 is an OBD-II diagnostic trouble code meaning: Charge Pressure Positive Deviation. Common causes: turbine actuator malfunction, bypass valve stuck. Estimated repair cost: $33–167.
Symptoms
- Reduced engine power
- Engine transition to emergency mode
- Unstable operation at high speeds
- Turbine noise
- Increased fuel consumption
Causes
- Turbine actuator malfunction
- Bypass valve stuck
- Leaks in the pressure control system
- Boost pressure sensor malfunction
- Mechanical damage to the turbine
How to Fix
- Check the operation of the turbine actuator
- Diagnose the condition of the bypass valve
- Check the pressure control system for leaks
- Test the boost pressure sensor
- Inspect the turbine for mechanical damage
Related codes
Error P1557 by Vehicle Brand
FAQ
What does the P1557 code mean?
P1557 is an OBD-II diagnostic trouble code that indicates: Charge Pressure Positive Deviation
What causes a P1557 error code?
The most common causes of P1557 include: Turbine actuator malfunction; Bypass valve stuck; Leaks in the pressure control system; Boost pressure sensor malfunction.
How do I fix a P1557 diagnostic trouble code?
To fix P1557: Check the operation of the turbine actuator. Diagnose the condition of the bypass valve. Check the pressure control system for leaks. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1557?
Limited driving only, diagnose soon
How much does it cost to fix P1557?
The estimated repair cost for P1557 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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