P1557 Code - Charge Pressure Positive Deviation
Quick Answer
The P1557 diagnostic trouble code indicates a charge pressure positive deviation, which means that the pressure in the intake system is higher than the expected value. Common causes include Faulty turbocharger or wastegate, Boost pressure sensor malfunction, Vacuum leaks in the intake system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1557 indicates Charge Pressure Positive Deviation.
- Common causes
- Common causes include Faulty turbocharger or wastegate, Boost pressure sensor malfunction, Vacuum leaks in the intake system.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1557 Description
The P1557 diagnostic trouble code indicates a charge pressure positive deviation, which means that the pressure in the intake system is higher than the expected value. This can lead to various performance issues in the vehicle, such as reduced power, poor fuel efficiency, and potential engine misfires. The charge pressure deviation can be caused by a malfunction in the turbocharger system, wastegate, boost pressure sensor, or related components. It is crucial to address this issue promptly to prevent further damage to the engine and ensure optimal performance.
Common Causes of P1557
- Faulty turbocharger or wastegate
- Boost pressure sensor malfunction
- Vacuum leaks in the intake system
- Clogged air filter restricting airflow
- Issues with the intercooler or related components
Symptoms of P1557
- Loss of power when accelerating
- Engine hesitation or surging
- Increased fuel consumption
- Engine knocking or pinging sounds
- Illuminated Check Engine Light
How to Fix P1557
- Diagnose the specific cause of the charge pressure positive deviation using a scan tool and inspecting related components.
- Check for any leaks in the intake system and repair or replace damaged hoses or connections.
- Test the turbocharger, wastegate, and boost pressure sensor for proper operation and replace any faulty components.
- Clean or replace the air filter to ensure proper airflow to the engine.
- Clear the diagnostic trouble codes and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P1557
The cost of repairing a charge pressure positive deviation can vary depending on the specific cause of the issue and the parts needed for the repair. On average, the repair costs for this type of problem can range from $200 to $800, including parts and labor. It is important to note that labor rates at auto repair shops may vary, so it is recommended to obtain quotes from multiple sources to get an accurate estimate for the repair.
Need more information about the P1557 code?
Need more information on how to fix the P1557 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1557 code diagnosed by a professional: Find a repair shop in your area
Code P1557 Information for Specific Makes
- P1557 Audi — Charge Pressure Positive Deviation
- P1557 Lexus — DC/DC Converter Temperature Sensor Circuit
- P1557 Toyota — DC/DC Converter Temperature Sensor Circuit
- P1557 Volkswagen — Charge Pressure Positive Deviation
Frequently Asked Questions about P1557 Code
No Frequently Asked Questions about P1557 Code found.
Discuss the causes and fixes for P1557 OBDII Code
Code P1557 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.