AutoCodes – Audi – P1557 Audi

P1557 Audi Code - Charge Pressure Positive Deviation

Quick Answer

P1557 Audi indicates Charge Pressure Positive Deviation. Common causes include External leak on intake or exhaust side, Faulty Charge Air Pressure Sensor, Faulty Wastegate Regulator Valve. 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 Audi indicates Charge Pressure Positive Deviation.
Common causes: Common causes include External leak on intake or exhaust side, Faulty Charge Air Pressure Sensor, Faulty Wastegate Regulator Valve.
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.

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Code Popularity 10,541

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 30, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1557 Audi Description

OBDII Code P1557 Audi - Charge Pressure Positive Deviation - AutoCodes.com — P1557 Audi Code - Charge Pressure Positive Deviation

What does this mean?

What are the Possible Causes of the DTC P1557 Audi?

External leak on intake or exhaust side
Faulty Charge Air Pressure Sensor
Faulty Wastegate Regulator Valve
Fualty Turbocharger

How to Fix the DTC P1557 Audi?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1557 Audi code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1557 Audi code?

Need more information on how to fix the P1557 Audi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1557 Audi code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1557 Audi Code

1. What are the common symptoms of OBDII code P1557 in an Audi related to Charge Pressure Positive Deviation?

- Common symptoms include loss of power, engine hesitation, rough idle, and potential stalling.

2. What are the possible causes of the OBDII code P1557 in an Audi?

- The code P1557 can be triggered by issues such as a faulty turbocharger, wastegate malfunction, boost pressure sensor problems, or vacuum leaks.

3. How can I diagnose the OBDII code P1557 in my Audi?

- Diagnosing the code P1557 typically involves inspecting the turbocharger, wastegate, boost pressure sensor, vacuum lines, and checking for any leaks in the system.

4. Can a dirty air filter cause the OBDII code P1557 in an Audi?

- Yes, a dirty air filter can restrict airflow to the engine, leading to potential issues with charge pressure and triggering the P1557 code.

5. What are some repair tips for fixing the OBDII code P1557 in an Audi?

- Repair tips may include cleaning or replacing the air filter, checking and repairing any leaks in the boost system, inspecting the turbocharger for faults, and ensuring proper wastegate operation.

6. Is it safe to continue driving my Audi with the OBDII code P1557 present?

- It is not recommended to continue driving with the P1557 code present, as it can lead to further engine damage and potential safety issues.

7. Can a DIY enthusiast fix the OBDII code P1557 issue in an Audi?

- Depending on the root cause of the problem, some DIY enthusiasts may be able to address issues like replacing the air filter or checking for vacuum leaks. However, more complex repairs may require professional assistance.

8. How much does it typically cost to repair the OBDII code P1557 in an Audi?

- The cost of repairing the P1557 code can vary greatly depending on the specific cause of the issue. Costs may range from a simple air filter replacement to more extensive turbocharger or sensor repairs.

9. Will resetting the OBDII code P1557 in my Audi make it go away permanently?

- Simply resetting the code may temporarily clear the error, but if the underlying issue is not addressed, the code is likely to reappear.

10. How can regular maintenance help prevent the OBDII code P1557 in an Audi?

- Regular maintenance, such as changing the air filter at recommended intervals, inspecting the turbo system for leaks, and ensuring proper engine operation, can help prevent issues that trigger the P1557 code.