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AutoCodes - Generic - P2A09

P2A09 Code - O2 Sensor Negative Voltage Bank 2 Sensor 1

- Code Popularity: 3,890 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P2A09?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty O2 Sensor Bank 2 Sensor 1
  • O2 Sensor Bank 2 Sensor 1 harness is open or shorted
  • O2 Sensor Bank 2 Sensor 1 circuit poor electrical connection
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How to Fix the DTC P2A09?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2A09 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P2A09 Description

The Engine Control Module (ECM) monitors the O2 Sensor Negative Voltage signal. The ECM sets the OBDII code when the O2 Sensor Negative Voltage is out of factory specifications.

OBDII Code P2A09 - O2 Sensor Negative Voltage Bank 2 Sensor 1 - AutoCodes.com
P2A09 Code - O2 Sensor Negative Voltage Bank 2 Sensor 1

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Code P2A09 comments

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