B1385 – Oil Level Lamp Circuit Open

The ODBII code B1385 indicates an open circuit in the oil level lamp circuit, meaning there is a malfunction in the wiring or components that monitor the oil level indicator.

The severity of ODBII code B1385 is moderate.

Common Causes For: B1384 Oil Level Lamp Circuit Failure

• Faulty oil level sensor
• Damaged wiring or connectors
• Open circuit in the oil level lamp circuit
• Blown fuse
• Faulty engine control module (ECM)

Common misdiagnosis for B1385 Oil Level Lamp Circuit Open

• Faulty oil level sensor
• Wiring issues or shorts in the circuit
• Malfunctioning engine control module (ECM)
• Incorrect oil level readings due to oil contamination
• Faulty dashboard gauge or indicator light
• Issues with the vehicle’s electrical system
• Problems with the oil pressure sensor

Common Troubleshooting Steps

The OBD-II code B1385 indicates an issue with the oil level lamp circuit, specifically that the circuit is open. This means that the vehicle’s onboard diagnostic system has detected a problem with the oil level sensor or its associated wiring. Here are some common troubleshooting steps to diagnose and resolve this issue:

• Visual Inspection: **Check Wiring and Connectors: Inspect the wiring harness and connectors associated with the oil level sensor for any signs of damage, corrosion, or loose connections.
• **Look for Shorts or Breaks: Check for any frayed wires or breaks in the insulation that could cause an open circuit.
• Check the Oil Level Sensor: **Test the Sensor: If accessible, test the oil level sensor for continuity using a multimeter. The sensor should have a specific resistance value when the oil level is at a certain point.
• **Inspect for Contamination: Ensure that the sensor is not contaminated with oil or debris, which could affect its operation.
• Check the Circuit: **Use a Multimeter: Measure the voltage at the oil level sensor connector with the ignition on (but the engine off). You should see a voltage reading if the circuit is functioning properly.
• **Check for Ground: Ensure that the sensor has a good ground connection. A poor ground can cause the circuit to appear open.
• Inspect the Oil Level Lamp: **Check the Lamp: Ensure that the oil level warning lamp on the dashboard is functioning correctly. A burned-out bulb can sometimes trigger a fault code.
• **Test the Circuit: If possible, test the circuit that powers the oil level lamp to ensure it is functioning correctly.
• Scan for Additional Codes: **Check for Other Codes: Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues.
• Clear the Code and Test Drive: **Clear the Code: After performing the above checks and repairs, clear the trouble code using an OBD-II scanner.
• **Test Drive: Take the vehicle for a test drive to see if the code reappears. Monitor the oil level lamp to ensure it operates correctly.
• Consult Service Manual: **Refer to Manufacturer Specifications: If the issue persists, consult the vehicle’s service manual for specific diagnostic procedures and specifications related to the oil level sensor and circuit.
• Seek Professional Help: **Professional Diagnosis: If you are unable to resolve the issue, consider seeking help from a qualified mechanic or automotive technician who can perform more advanced diagnostics. By following these steps, you should be able to identify and resolve the issue related to the B1385 code. Always ensure safety precautions are taken when working on a vehicle’s electrical system.