Engine-Codes - Generic - B1391

B1391 Code - Oil Level Switch Circuit Failure

- Code Popularity: 4,652 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC B1391?

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 Oil Level Switch
  • Oil Level Switch harness is open or shorted
  • Oil Level Switch circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)
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How to Fix the DTC B1391?

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 connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the B1391 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the B1391 Code Mean?

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.

B1391 Code - Oil Level Switch Circuit Failure

Need more Information on the Code?

Need more information on how to fix the B1391 code? Get Access to Factory Service Manuals

Code 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

Need Help with the Code?

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