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Engine-Codes – Generic – B1385

B1385 Code - Oil Level Lamp Circuit Open

Quick Answer

The B1385 diagnostic trouble code (DTC) refers to an issue with the Oil Level Lamp Circuit being open, indicating a communication problem between the oil level sensor and the vehicle's onboard computer system. Common causes include Faulty oil level sensor, Wiring issues or corrosion in the oil level sensor circuit, Loose or damaged connections in the circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B1385 indicates Oil Level Lamp Circuit Open.
Common causes
Common causes include Faulty oil level sensor, Wiring issues or corrosion in the oil level sensor circuit, Loose or damaged connections in the circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code B1385 Description

The B1385 diagnostic trouble code (DTC) refers to an issue with the Oil Level Lamp Circuit being open, indicating a communication problem between the oil level sensor and the vehicle's onboard computer system. This code typically means that the oil level sensor is not sending the proper signal to the computer, which can lead to inaccurate readings of the oil level in the engine. This can have serious implications for the vehicle's performance and overall health as the engine oil is vital for lubricating and protecting the engine's components.

OBDII Code B1385 - Oil Level Lamp Circuit Open
B1385 Code - Oil Level Lamp Circuit Open

Common Causes of B1385

  1. Faulty oil level sensor
  2. Wiring issues or corrosion in the oil level sensor circuit
  3. Loose or damaged connections in the circuit
  4. Issues with the vehicle's onboard computer system
  5. Low engine oil levels

Symptoms of B1385

  1. Illumination of the oil pressure warning light on the dashboard
  2. Inaccurate oil level readings on the instrument cluster
  3. Engine overheating
  4. Engine knocking or ticking noises
  5. Reduced engine performance

How to Fix B1385

  1. Begin by inspecting the wiring and connections related to the oil level sensor circuit to check for any visible damage or corrosion.
  2. Test the oil level sensor itself to determine if it is functioning properly or needs replacement.
  3. If the sensor is faulty, replace it with a new one according to the manufacturer's guidelines.
  4. Clear the DTC from the vehicle's computer system using an OBD-II scanner to reset the system and ensure the issue is resolved.
  5. Test drive the vehicle to verify that the oil level lamp circuit is now functioning correctly and that the symptoms have been eliminated.

Cost to Fix B1385

The cost of repairing a B1385 DTC related to the Oil Level Lamp Circuit being open can vary depending on the specific cause of the issue and the cost of parts and labor in your area. Typically, replacing a faulty oil level sensor can range from $100 to $250, while addressing wiring or connection issues may require additional labor costs. Overall, you can expect to pay anywhere from $150 to $500 for this repair, including parts and labor. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to get quotes from multiple shops to find the best price.

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Code B1385 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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