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Engine-Codes – Audi – P1553 Audi

P1553 Audi Code - Barometric/manifold Pressure Signal Ratio Out of Range

Quick Answer

The P1553 diagnostic trouble code for Audi vehicles indicates that the barometric/manifold pressure signal ratio is out of range. Common causes include Faulty barometric pressure sensor, Faulty manifold pressure sensor, 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
P1553 Audi indicates Barometric/manifold Pressure Signal Ratio Out of Range.
Common causes
Common causes include Faulty barometric pressure sensor, Faulty manifold pressure sensor, 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P1553 Audi Description

The P1553 diagnostic trouble code for Audi vehicles indicates that the barometric/manifold pressure signal ratio is out of range. This means that there is a discrepancy between the barometric pressure and the manifold pressure readings being received by the engine control module (ECM). The barometric pressure sensor measures the atmospheric pressure, while the manifold pressure sensor measures the pressure in the intake manifold. The ECM compares these two readings to ensure that the engine is running at optimal performance levels.

OBDII Code P1553 Audi - Barometric/manifold Pressure Signal Ratio Out of Range
P1553 Audi Code - Barometric/manifold Pressure Signal Ratio Out of Range

Common Causes of P1553 Audi

  1. Faulty barometric pressure sensor
  2. Faulty manifold pressure sensor
  3. Vacuum leaks in the intake system
  4. Wiring or connector issues with the sensors
  5. ECM software issues

Symptoms of P1553 Audi

  1. Reduced fuel efficiency
  2. Rough idling
  3. Hesitation during acceleration
  4. Engine misfires
  5. Vehicle going into limp mode

How to Fix P1553 Audi

  1. Begin by connecting a diagnostic scanner to retrieve the specific fault codes and confirm the P1553 code.
  2. Inspect the barometric pressure sensor and manifold pressure sensor for any signs of damage or corrosion. Replace any faulty sensors.
  3. Check for vacuum leaks in the intake system and repair as necessary.
  4. Inspect the wiring and connectors associated with the sensors for any damage or loose connections. Repair or replace as needed.
  5. Clear the fault codes from the ECM and perform a test drive to ensure that the issue has been resolved.

Cost to Fix P1553 Audi

The cost estimate for repairing the P1553 code on an Audi vehicle can vary depending on the specific cause of the issue. Typically, replacing a faulty sensor can cost between $100 and $200, while repairing vacuum leaks or wiring issues may range from $150 to $300. Labor costs can add an additional $80 to $150 per hour, with the total cost potentially ranging from $300 to $800 or more. It's important to consult with a qualified mechanic or auto repair shop to get a more accurate estimate based on the specific circumstances of your vehicle.

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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 P1553 Audi Code

1. What are the common symptoms of OBDII code P1553 in an Audi?

Symptoms may include poor engine performance, reduced fuel efficiency, rough idling, and potential stalling.

2. What are the possible causes of OBDII code P1553 in an Audi?

The code P1553 typically indicates issues with the barometric/manifold pressure sensor, such as a faulty sensor, wiring problems, or a vacuum leak.

3. How can I diagnose the cause of OBDII code P1553 in my Audi?

Diagnosis usually involves checking the barometric/manifold pressure sensor for proper operation, inspecting related wiring for damage, and testing for vacuum leaks in the intake system.

4. Can a dirty air filter trigger OBDII code P1553 in an Audi?

Yes, a clogged or dirty air filter can disrupt the air intake, leading to incorrect pressure readings and potentially triggering the P1553 fault code.

5. Is it safe to continue driving my Audi with OBDII code P1553 present?

It is not recommended to drive the vehicle with a persistent P1553 fault code, as it can affect engine performance and fuel efficiency, leading to potential damage if left unresolved.

6. How can I reset OBDII code P1553 in my Audi?

Resetting the code can be done using an OBDII scanner or by disconnecting the car's battery for a few minutes. However, it is essential to address the underlying issue causing the code to prevent it from reoccurring.

7. Will OBDII code P1553 in an Audi cause the Check Engine Light to illuminate?

Yes, the presence of code P1553 will typically trigger the Check Engine Light to come on in an Audi to alert the driver of a potential issue with the barometric/manifold pressure sensor.

8. Can a DIY enthusiast repair OBDII code P1553 in an Audi?

Depending on the cause, some DIY enthusiasts may be able to address the issue themselves by replacing the sensor, fixing wiring problems, or repairing vacuum leaks. However, if unsure, it's best to consult a professional mechanic.

9. How much does it cost to repair OBDII code P1553 in an Audi?

The cost of repairing P1553 can vary depending on the root cause of the issue. It may range from a simple sensor replacement to more complex repairs involving wiring or vacuum system fixes.

10. Can a software update resolve OBDII code P1553 in an Audi?

In some cases, a software update from the manufacturer may address P1553-related issues, especially if they are related to sensor calibration or communication errors. Contacting an Audi dealership or authorized service center can provide more information on this option.

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