B1391 - Oil Level Switch Circuit Failure

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Oil Level Switch
  • Oil Level Switch harness is open or shorted
  • Oil Level Switch circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

Possible symptoms

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

B1391 Description

The Powertrain Control Module (PCM) monitors the Oil Level Switch. The PCM sets the OBDII code when the Oil Level Switch is not to factory specifications.
OBDII Code B1391 - Oil Level Switch Circuit Failure - AutoCodes.com

B1391 Information for specific makes

  • B1391 HYUNDAI Passenger Seat Track Position Sensor Short Or Short To Battery
  • B1391 KIA Passenger Seat Track Position Sensor Short Or Short To Battery

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Related Information

B1391 Comments

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