AutoCodes – Honda – P2229 2009 Honda Accord

P2229 2009 Honda Accord 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 Common causes include Powertrain Control Module (PCM) outdated or incorrect software, Faulty Powertrain Control Module (PCM).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 2009 Honda Accord 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Common causes: Common causes include Powertrain Control Module (PCM) outdated or incorrect software, Faulty Powertrain Control Module (PCM).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 2,858

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 2009 Honda Accord 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 2009 Honda Accord - Barometric Pressure Sensor Circuit High Voltage - AutoCodes.com — P2229 2009 Honda Accord Code - Barometric Pressure Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2229 2009 Honda Accord?

Powertrain Control Module (PCM) outdated or incorrect software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

How to Fix the DTC P2229 2009 Honda Accord?

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 2009 Honda Accord 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 2009 Honda Accord Code

1. What does the OBDII code P2229 mean on a 2009 Honda Accord?

P2229 indicates that the barometric pressure sensor circuit is detecting a voltage level higher than the expected range.

2. What are the common symptoms of code P2229 in a 2009 Honda Accord?

Symptoms may include poor engine performance, rough idling, reduced fuel efficiency, stalling, or the check engine light being illuminated.

3. What causes the P2229 code to appear in a 2009 Honda Accord?

Common causes include a faulty barometric pressure sensor, wiring issues like damaged or corroded connections, a malfunctioning PCM (Powertrain Control Module), or an incorrect sensor calibration.

4. Can a dirty air filter trigger the P2229 code?

While unlikely, a severely clogged air filter could affect airflow readings, but the code typically points to an issue with the barometric pressure sensor or its circuit.

5. How is the P2229 code diagnosed?

A technician will use a scan tool to check the sensor data, inspect the wiring and connectors for damage, and test the sensor's voltage output to ensure it is within specification.

6. Can I drive with the P2229 code on my 2009 Honda Accord?

Driving with this code may be possible, but it is not recommended as it can lead to poor performance, higher emissions, and potential damage to the engine or other components.

7. How do you fix the P2229 code on a 2009 Honda Accord?

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

8. Where is the barometric pressure sensor located on a 2009 Honda Accord?

The barometric pressure sensor is typically integrated into the PCM or mounted near the intake manifold, depending on the engine configuration.

9. How much does it cost to repair the P2229 code on a 2009 Honda Accord?

Repair costs can range from $100 to $300, depending on whether the issue is with the sensor, wiring, or PCM.

10. Can a faulty MAP sensor cause the P2229 code?

No, the MAP (Manifold Absolute Pressure) sensor and barometric pressure sensor are separate components, but issues with the MAP sensor could cause similar symptoms.