AutoCodesAudi – P1155 Audi

P1155 Audi Code - Manifold Absolute Pressure Sensor Short To Positive

Quick Answer

P1155 Audi indicates Manifold Absolute Pressure Sensor Short To Positive. Common causes include Faulty Manifold Absolute Pressure Sensor, Manifold Absolute Pressure Sensor harness is open or shorted, Manifold Absolute Pressure Sensor circuit poor electrical connection. 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
P1155 Audi indicates Manifold Absolute Pressure Sensor Short To Positive.
Common causes
Common causes include Faulty Manifold Absolute Pressure Sensor, Manifold Absolute Pressure Sensor harness is open or shorted, Manifold Absolute Pressure Sensor circuit poor electrical connection.
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 5,583
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 03, 2019
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Code P1155 Audi Description

OBDII Code P1155 Audi - Manifold Absolute Pressure Sensor Short To Positive - AutoCodes.com
P1155 Audi Code - Manifold Absolute Pressure Sensor Short To Positive

What are the Possible Causes of the DTC P1155 Audi?

  • Faulty Manifold Absolute Pressure Sensor
  • Manifold Absolute Pressure Sensor harness is open or shorted
  • Manifold Absolute Pressure Sensor circuit poor electrical connection

How to Fix the DTC P1155 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 P1155 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.

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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 P1155 Audi Code

1. What does the OBDII code P1155 mean for an Audi?

P1155 indicates a problem with the Manifold Absolute Pressure (MAP) sensor, specifically a short circuit to positive voltage.

2. What are the symptoms of the P1155 code on an Audi?

Symptoms may include poor engine performance, rough idling, difficulty accelerating, reduced fuel efficiency, and the check engine light turning on.

3. What causes the P1155 code to appear?

Common causes include a damaged MAP sensor, wiring issues such as frayed or shorted wires, or a faulty engine control module (ECM).

4. Can I drive my Audi with the P1155 code active?

Driving with this code active is not recommended, as it can lead to further engine performance issues and potential damage if the problem isn’t addressed.

5. How do I diagnose the P1155 code on my Audi?

Start by inspecting the MAP sensor and its wiring for signs of damage or short circuits. Use a multimeter to check voltage and continuity. You may also need a scan tool to monitor sensor readings.

6. How is the P1155 code fixed?

Repairs typically involve replacing the MAP sensor, repairing damaged wiring, or addressing any issues with the ECM if necessary.

7. How much does it cost to fix the P1155 code on an Audi?

Repair costs vary but typically range from $100 to $300 for a MAP sensor replacement, depending on labor and parts pricing.

8. Can a dirty MAP sensor cause the P1155 code?

A dirty MAP sensor is less likely to cause this specific code, as it typically points to a short circuit to positive voltage rather than contamination.

9. Will clearing the P1155 code fix the problem?

Clearing the code without addressing the underlying issue will only temporarily remove the warning. The code will likely return if the root cause isn’t resolved.

10. How can I prevent the P1155 code from occurring in the future?

Regular maintenance, including inspecting sensors and wiring for damage, can help prevent issues like short circuits that lead to the P1155 code.

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