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P2A00 Code - O2 Sensor Circuit Range/Performance Bank 1 Sensor 1

- Code Popularity: 65,248 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P2A00?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Air fuel ratio (A/F) sensor 1
  • Air fuel ratio (A/F) sensor 1 heater
  • Fuel pressure
  • Fuel injector
  • Intake air leaks
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How to Fix the DTC P2A00?

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.

Search for P2A00 Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2A00 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.

When is the Code Detected?

The output voltage computed by ECM from the A/F sensor 1 signal is shifted to the lean side for a specified period.

What are Code Possible Symptoms?

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

Code P2A00 Description

The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor. The sensor element of the A/F sensor 1 is composed an electrode
layer, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide range.
The exhaust gas components diffuse through the diffusion layer at the sensor cell. An electrode layer is applied voltage, and this current relative oxygen density in lean. Also this current relative hydrocarbon density in rich.
Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this electrode layer of current. In addition, a heater is integrated in the
sensor to ensure the required operating temperature of about 800°C (1,472°F).

OBDII Code P2A00 - O2 Sensor Circuit Range/Performance Bank 1 Sensor 1 - AutoCodes.com
P2A00 Code - O2 Sensor Circuit Range/Performance Bank 1 Sensor 1

Need More Information on the Code?

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Information for Specific Makes

  • P2A00 Acura Air/Fuel Ratio Sensor 1 Bank 1 Circuit Range/Performance Problem
  • P2A00 Buick O2 Sensor Performance Bank 1 Sensor 1
  • P2A00 Cadillac O2 Sensor Performance Bank 1 Sensor 1
  • P2A00 Chevrolet O2 Sensor Performance Bank 1 Sensor 1
  • P2A00 Dodge O2 Sensor 1/1 Circuit Performance
  • P2A00 Ford O2 Sensor Circuit Range/Performance Bank 1 Sensor 1
  • P2A00 GMC O2 Sensor Performance Bank 1 Sensor 1
  • P2A00 Honda Air/Fuel Ratio Sensor 1 Bank 1 Circuit Range/Performance Problem
  • P2A00 Infiniti Air Fuel Ratio Sensor Circuit Range/Performance Bank 1 Sensor 1
  • P2A00 Lexus A/F Sensor Circuit Slow Response Bank 1 Sensor 1
  • P2A00 Lincoln O2 Sensor Circuit Range/Performance Bank 1 Sensor 1
  • P2A00 Mercury O2 Sensor Circuit Range/Performance Bank 1 Sensor 1
  • P2A00 Nissan Air Fuel Ratio Sensor Circuit Range/Performance Bank 1 Sensor 1  
  • P2A00 Scion A/F Sensor Circuit Slow Response Bank 1 Sensor 1
  • P2A00 Toyota A/F Sensor Circuit Slow Response Bank 1 Sensor 1

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Code P2A00 comments

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