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AutoCodes - Generic - P2243

P2243 Code - O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1

- Code Popularity: 39,116 Views
- Repair Importance Level: 2/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P2243?

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 Front Oxygen Sensor Bank 1
  • Front Oxygen Sensor Bank 1 harness is open or shorted
  • Front Oxygen Sensor Bank 1 circuit poor electrical connection
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How to Fix the DTC P2243?

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 P2243 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 P2243 Description

The Front Oxygen Sensor (O2 Sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

OBDII Code P2243 - O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1 - AutoCodes.com
P2243 Code - O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1

Need More Information on the Code?

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Information for Specific Makes

  • P2243 Acura O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1
  • P2243 BMW Upstream Oxygen Sensor Open Circuit Monitoring Reference Voltage Failure Bank 1
  • P2243 Dodge O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1
  • P2243 Ford O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1
  • P2243 Honda O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1
  • P2243 Hyundai O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1
  • P2243 KIA O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1
  • P2243 Lincoln O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1
  • P2243 Mazda O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1
  • P2243 Mercury O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1
  • P2243 MINI Upstream Oxygen Sensor Open Circuit Monitoring Reference Voltage Failure Bank 1

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Code P2243 comments

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