AutoCodes – BMW – P2229 BMW

P2229 BMW Code - Barometric Pressure Sensor 'A' Circuit High

Quick Answer

This fault code is stored in the engine control module when a malfunction is detected in the barometric pressure sensor circuit. Common causes include Faulty Barometric Pressure (BARO) sensor, Barometric Pressure sensor harness is open or shorted, Barometric 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: P2229 BMW indicates Barometric Pressure Sensor 'A' Circuit High.
Common causes: Common causes include Faulty Barometric Pressure (BARO) sensor, Barometric Pressure sensor harness is open or shorted, Barometric 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 604

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 Jun 03, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2229 BMW Description

This fault code is stored in the engine control module when a malfunction is detected in the barometric pressure sensor circuit. The Engine Control Module (ECM) uses the barometric pressure sensor to monitor air pressure and hence air density. More dense air contains more oxygen particles, less dense air contains fewer oxygen particles. The engine fueling can be adjusted accordingly. The barometric pressure sensor can be a separate component sampling the atmospheric air pressure. Occasionally the component can be fitted internally within the engine control module.

OBDII Code P2229 BMW - Barometric Pressure Sensor 'A' Circuit High - AutoCodes.com — P2229 BMW Code - Barometric Pressure Sensor 'A' Circuit High

What does this mean?

What are the Possible Causes of the DTC P2229 BMW?

Faulty Barometric Pressure (BARO) sensor
Barometric Pressure sensor harness is open or shorted
Barometric Pressure sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2229 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 P2229 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 P2229 BMW code?

Need more information on how to fix the P2229 BMW code? Get Access to Factory Service Manuals

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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 P2229 BMW Code

1. What does the OBDII code P2229 mean on a BMW?

P2229 indicates that the Barometric Pressure Sensor 'A' circuit is reading a pressure level that is higher than expected by the engine control module (ECM).

2. What are the common symptoms of the P2229 code on a BMW?

Symptoms may include poor engine performance, reduced fuel efficiency, rough idling, difficulty starting, and an illuminated Check Engine Light.

3. What causes the P2229 code to appear on a BMW?

Common causes include a faulty barometric pressure sensor, wiring issues such as shorts or corrosion, a malfunctioning ECM, or incorrect sensor calibration.

4. Can I drive my BMW with the P2229 code?

While the car may still be drivable, continuing to drive with this code can lead to further engine performance issues and potential damage. It's best to address it promptly.

5. How do I diagnose the P2229 code on my BMW?

Start by using an OBDII scanner to confirm the code, inspect the barometric pressure sensor and its wiring for damage or corrosion, and compare sensor readings with atmospheric pressure using a diagnostic tool.

6. How do I fix the P2229 code on a BMW?

Repairs may involve replacing the barometric pressure sensor, repairing or replacing damaged wiring, or updating/reprogramming the ECM if needed.

7. Where is the barometric pressure sensor located on a BMW?

The location varies by model, but it is often integrated into the ECM or located near the intake manifold or firewall.

8. Is a faulty barometric pressure sensor the only reason for the P2229 code?

No, the code can also occur due to wiring issues, a malfunctioning ECM, or even incorrect atmospheric pressure readings during diagnostics.

9. How much does it cost to fix the P2229 code on a BMW?

Costs depend on the exact issue. Replacing the barometric pressure sensor typically costs $100â€“$300, including parts and labor. Wiring or ECM repairs may cost more.

10. Can a dirty air filter cause the P2229 code on a BMW?

No, a dirty air filter is unlikely to trigger this code, as it specifically relates to the barometric pressure sensor circuit rather than airflow issues.