P2248 - O2 Sensor Reference Voltage Performance Bank 2 Sensor 1

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3   
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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

Possible symptoms

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

P2248 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 P2248 - O2 Sensor Reference Voltage Performance Bank 2 Sensor 1 - AutoCodes.com

P2248 Information for specific makes

  • P2248 ACURA O2 Sensor Reference Voltage Performance Bank 2 Sensor 1
  • P2248 DODGE O2 Sensor Reference Voltage Performance Bank 2 Sensor 1
  • P2248 FORD O2 Sensor Reference Voltage Performance Bank 2 Sensor 1
  • P2248 HONDA O2 Sensor Reference Voltage Performance Bank 2 Sensor 1
  • P2248 HYUNDAI O2 Sensor Reference Voltage Performance Bank 2 Sensor 1
  • P2248 KIA O2 Sensor Reference Voltage Performance Bank 2 Sensor 1
  • P2248 LINCOLN O2 Sensor Reference Voltage Performance Bank 2 Sensor 1
  • P2248 MERCURY O2 Sensor Reference Voltage Performance Bank 2 Sensor 1

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