P2249 - O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3   
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P2249 Possible Causes

  • Faulty Front Oxygen Sensor Bank 2
  • Front Oxygen Sensor Bank 2 harness is open or shorted
  • Front Oxygen Sensor Bank 2 circuit poor electrical connection

First diagnose P2249 code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

Cost of diagnosing the P2249 code

    Labor: 1.0

    The cost of diagnosing the P2249 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

P2249 Possible Symptoms

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

P2249 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 P2249 - O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1 - AutoCodes.com

P2249 More Information

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P2249 Information for specific makes

  • P2249 ACURA O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1
  • P2249 DODGE O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1
  • P2249 FORD O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1
  • P2249 HONDA O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1
  • P2249 HYUNDAI O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1
  • P2249 KIA O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1
  • P2249 LINCOLN O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1
  • P2249 MERCURY O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1

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