AutoCodes – Honda – P2228 Honda

P2228 Honda Code - Barometric Pressure Sensor Circuit Low 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 Common causes include Powertrain Control Module (PCM) outdated or incorrect software, Faulty Powertrain Control Module (PCM).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: P2228 Honda indicates Barometric Pressure Sensor Circuit Low 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Common causes: Common causes include Powertrain Control Module (PCM) outdated or incorrect software, Faulty Powertrain Control Module (PCM).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 14,360

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 May 23, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P2228 Honda 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 P2228 Honda - Barometric Pressure Sensor Circuit Low Voltage - AutoCodes.com — P2228 Honda Code - Barometric Pressure Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2228 Honda?

Powertrain Control Module (PCM) outdated or incorrect software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

How to Fix the DTC P2228 Honda?

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 P2228 Honda 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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Information for Specific Honda Models

P2228 2008 Honda Accord — Barometric Pressure Sensor Circuit Low Voltage
P2228 2009 Honda Accord — Barometric Pressure Sensor Circuit Low Voltage
P2228 2010 Honda Accord — Barometric Pressure Sensor Circuit Low Voltage

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.