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AutoCodes - Generic - B1391

B1391 Code - Oil Level Switch Circuit Failure

- Code Popularity: 4,653 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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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?

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 B1391 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 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 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

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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Code B1391 comments

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