AutoCodes – Audi – P1555 Audi

P1555 Audi Code - Charge Pressure Upper Limit Exceeded

Quick Answer

P1555 Audi indicates Charge Pressure Upper Limit Exceeded. 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: P1555 Audi indicates Charge Pressure Upper Limit Exceeded.
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 8,912

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 P1555 Audi Description

OBDII Code P1555 Audi - Charge Pressure Upper Limit Exceeded - AutoCodes.com — P1555 Audi Code - Charge Pressure Upper Limit Exceeded

What does this mean?

What are the Possible Causes of the DTC P1555 Audi?

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

How to Fix the DTC P1555 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 P1555 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 P1555 Audi code?

Need more information on how to fix the P1555 Audi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1555 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 P1555 Audi Code

1. What are the common symptoms of OBDII code P1555 in an Audi related to Charge Pressure Upper Limit Exceeded?

- Common symptoms include reduced engine power, engine hesitation, and the illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P1555 in an Audi?

- The causes can include a malfunctioning turbocharger, wastegate issues, leaks in the intake system, faulty boost pressure sensor, or a problem with the engine control module.

3. How can I diagnose OBDII code P1555 in my Audi?

- Diagnosis typically involves using a scan tool to read the fault codes, checking the turbocharger and related components for leaks or malfunctions, and testing the boost pressure sensor.

4. What are some repair tips for fixing OBDII code P1555 in an Audi?

- Repair tips may include checking and replacing damaged vacuum lines, ensuring the wastegate is functioning properly, inspecting the turbocharger for leaks or damage, and resetting the engine control module.

5. Can I drive my Audi with OBDII code P1555 present?

- It is not recommended to drive your Audi with this code present, as it can lead to further damage to the turbocharger and other engine components. Seek professional help to diagnose and repair the issue.

6. How serious is OBDII code P1555 in an Audi?

- This code is considered serious as it can affect the performance and longevity of the engine. Ignoring the issue may lead to more extensive and costly repairs in the future.

7. Will resetting the Check Engine Light resolve OBDII code P1555 in an Audi?

- Resetting the light may temporarily turn it off, but it will not fix the underlying issue causing the code. It's important to diagnose and repair the problem to prevent further complications.

8. Can a DIY enthusiast fix OBDII code P1555 in an Audi?

- Depending on the skill level and tools available, some DIY enthusiasts may be able to address simpler causes of the code, such as checking for loose connections or damaged vacuum lines. However, complex issues may require professional assistance.

9. How much does it cost to repair OBDII code P1555 in an Audi?

- The cost of repairs can vary depending on the specific cause of the code and the labor rates in your area. It is advisable to obtain quotes from reputable mechanics or dealerships for an accurate estimate.

10. Is there a way to prevent OBDII code P1555 from occurring in an Audi?

- Regular maintenance, including checking and replacing worn components, ensuring proper engine tune-up, and using quality fuel, can help prevent issues leading to OBDII code P1555 in an Audi.