AutoCodes – Acura – P2229 Acura

P2229 Acura Code - Barometric Pressure Sensor Circuit High Voltage

Quick Answer

The Barometric pressure (BARO) sensor is built into the Powertrain Control Module (PCM) and monitors atmospheric pressure. Common causes include Powertrain Control Module (PCM) outdated or incorrect software, Faulty Powertrain Control Module (PCM). 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 Acura indicates Barometric Pressure Sensor Circuit High Voltage.
Common causes: Common causes include Powertrain Control Module (PCM) outdated or incorrect software, Faulty Powertrain Control Module (PCM).
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 5,036

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 May 23, 2024

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

The Barometric pressure (BARO) sensor is built into the Powertrain Control Module (PCM) and monitors atmospheric pressure. When the throttle valve is wide open, the Manifold Absolute Pressure (MAP) sensor output is nearly equal to the BARO sensor output. If the throttle position is beyond a value stored in the PCM that is used to detect wide-open throttle, and if the difference between the MAP sensor output and the BARO sensor output is equal to or greater than a set value, a malfunction in the BARO sensor output is detected and a Diagnostic Trouble Code (DTC) is stored.

OBDII Code P2229 Acura - Barometric Pressure Sensor Circuit High Voltage - AutoCodes.com — P2229 Acura Code - Barometric Pressure Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2229 Acura?

Powertrain Control Module (PCM) outdated or incorrect software
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P2229 Acura?

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 Acura 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 P2229 Acura Code

1. What does the OBDII code P2229 mean on an Acura?

P2229 indicates that the Barometric Pressure Sensor Circuit is experiencing a high voltage reading, which can affect engine performance.

2. What are the common symptoms of the P2229 code in an Acura?

Symptoms may include poor engine performance, rough idling, reduced fuel efficiency, and the Check Engine Light being illuminated.

3. What causes the P2229 code to appear on an Acura?

Common causes include a faulty barometric pressure sensor, damaged wiring or connectors, a malfunctioning powertrain control module (PCM), or issues with the sensorâ€™s electrical circuit.

4. How do I diagnose the P2229 code on my Acura?

Diagnose by using an OBDII scanner to confirm the code, inspecting the barometric pressure sensor and its wiring, and testing the sensor with a multimeter to check for proper voltage readings.

5. Can a dirty air filter cause the P2229 code on an Acura?

While unlikely, a severely clogged air filter can indirectly affect sensor readings. However, the primary cause is typically related to the sensor itself or its circuitry.

6. How do I fix the P2229 code on my Acura?

Repairs may involve replacing the barometric pressure sensor, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the PCM if necessary.

7. Is it safe to continue driving with the P2229 code on my Acura?

Driving with the P2229 code is not recommended, as it can lead to poor engine performance and potential long-term damage to the engine or emissions system.

8. How much does it typically cost to fix the P2229 code on an Acura?

Repair costs can range from $150-$300 for sensor replacement, but the cost may vary depending on the extent of wiring or PCM repairs needed.

9. Can I clear the P2229 code without fixing the issue?

Clearing the code without addressing the underlying issue may temporarily turn off the Check Engine Light, but the problem will likely return and could worsen over time.

10. Does the P2229 code affect emissions testing on an Acura?

Yes, the P2229 code can cause your Acura to fail an emissions test, as it may indicate improper engine performance and emissions control.