AutoCodes – BMW – P1171 BMW

P1171 BMW Code - Ambient Pressure Sensor Learned Value Error

Quick Answer

P1171 BMW indicates Ambient Pressure Sensor Learned Value Error. Common causes include Faulty Ambient Pressure Sensor, Ambient Pressure Sensor harness is open or shorted, Ambient 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: P1171 BMW indicates Ambient Pressure Sensor Learned Value Error.
Common causes: Common causes include Faulty Ambient Pressure Sensor, Ambient Pressure Sensor harness is open or shorted, Ambient 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 5,856

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 11, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1171 BMW Description

OBDII Code P1171 BMW - Ambient Pressure Sensor Learned Value Error - AutoCodes.com — P1171 BMW Code - Ambient Pressure Sensor Learned Value Error

What does this mean?

What are the Possible Causes of the DTC P1171 BMW?

Faulty Ambient Pressure Sensor
Ambient Pressure Sensor harness is open or shorted
Ambient Pressure Sensor circuit poor electrical connection

How to Fix the DTC P1171 BMW?

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 P1171 BMW 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 P1171 BMW code?

Need more information on how to fix the P1171 BMW code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P1171 BMW Code

1. What are the common symptoms of OBDII code P1171 in a BMW related to the Ambient Pressure Sensor Learned Value Error?

- Common symptoms include rough idling, reduced engine performance, poor fuel efficiency, and potential stalling.

2. What typically causes the OBDII code P1171 in a BMW related to the Ambient Pressure Sensor Learned Value Error?

- The code is usually triggered by a faulty ambient pressure sensor, vacuum leaks, or issues with the intake system.

3. How can I diagnose the OBDII code P1171 in a BMW related to the Ambient Pressure Sensor Learned Value Error?

- Proper diagnosis involves inspecting the ambient pressure sensor, checking for vacuum leaks, and ensuring the intake system is functioning correctly.

4. Can a DIY enthusiast repair the OBDII code P1171 in a BMW related to the Ambient Pressure Sensor Learned Value Error?

- While some may attempt to fix the issue themselves, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

5. What is the significance of the Ambient Pressure Sensor in a BMW triggering the OBDII code P1171?

- The Ambient Pressure Sensor plays a crucial role in helping the engine control unit adjust fuel delivery and ignition timing based on atmospheric pressure, affecting engine performance.

6. Is it safe to continue driving with the OBDII code P1171 related to the Ambient Pressure Sensor Learned Value Error illuminated?

- It is not advisable to ignore the code, as it can lead to decreased engine efficiency and potential damage if left unresolved for an extended period.

7. How much does it typically cost to repair the OBDII code P1171 in a BMW related to the Ambient Pressure Sensor Learned Value Error?

- Repair costs can vary depending on the exact cause of the issue, but it is recommended to budget for sensor replacement or intake system repairs.

8. Can extreme weather conditions affect the triggering of the OBDII code P1171 in a BMW related to the Ambient Pressure Sensor Learned Value Error?

- Yes, extreme temperature changes or altitude variations can impact the ambient pressure sensor readings, potentially leading to the code being triggered.

9. Are there any preventative measures to avoid the recurrence of the OBDII code P1171 in a BMW related to the Ambient Pressure Sensor Learned Value Error?

- Regular maintenance, including checking for vacuum leaks and ensuring the sensor is clean and functioning properly, can help prevent the issue from reoccurring.

10. How long does it typically take for a mechanic to diagnose and repair the OBDII code P1171 in a BMW related to the Ambient Pressure Sensor Learned Value Error?

- The diagnosis and repair time can vary based on the exact cause of the issue, but it is recommended to consult with a mechanic for a more accurate estimate.