B1893 – GPS Antenna Open Circuit

The ODBII code B1893 indicates a malfunction related to the GPS antenna, specifically an open circuit, meaning there is a break in the electrical connection preventing proper signal reception.

The severity of ODBII code B1893 GPS Antenna Open Circuit is moderate.

Common Causes For: B1892 Air Bag Tone Warning Indicator Circuit Failure

• Damaged or broken GPS antenna
• Faulty wiring or connectors
• Corrosion at connection points
• Disconnected antenna
• Faulty GPS module
• Short circuit in the wiring harness
• Poor ground connection

Common misdiagnosis for B1893 GPS Antenna Open Circuit

• Faulty GPS module
• Wiring issues or shorts
• Defective vehicle navigation system
• Malfunctioning body control module (BCM)
• Poor ground connections
• Incorrectly installed or damaged GPS antenna
• Software or firmware issues in the vehicle’s system

Common Troubleshooting Steps

The OBD-II code B1893 indicates a problem with the GPS antenna, specifically an open circuit. This can affect various systems in the vehicle, such as navigation and other location-based services. Here are some common troubleshooting steps to diagnose and potentially resolve the issue:

• Visual Inspection:
• Check the GPS antenna for any visible damage, such as cracks or corrosion.
• Inspect the wiring and connectors leading to the GPS antenna for signs of wear, fraying, or disconnection.
• Check Connections:
• Ensure that the antenna connector is securely attached to the vehicle’s wiring harness.
• Look for any loose or corroded connections that could cause an open circuit.
• Test the Antenna:
• Use a multimeter to check the resistance of the GPS antenna. An open circuit will show infinite resistance.
• If possible, test the antenna with a known good unit to see if the problem persists.
• Inspect the Wiring:
• Trace the wiring from the GPS antenna to the vehicle’s control module. Look for any breaks, shorts, or damaged sections in the wiring.
• Repair or replace any damaged wiring as necessary.
• Check the Control Module:
• If the antenna and wiring appear to be in good condition, the issue may lie within the vehicle’s control module that processes GPS signals.
• Check for any software updates or reprogramming that may be required for the control module.
• Clear the Code:
• After performing any repairs or replacements, clear the OBD-II codes using a scan tool.
• Take the vehicle for a test drive to see if the code reappears.
• Consult Technical Service Bulletins (TSBs):
• Check for any manufacturer-specific TSBs related to the GPS antenna or the systems that rely on it. There may be known issues or recommended fixes.
• Professional Diagnosis:
• If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership. They may have specialized diagnostic tools and knowledge of the vehicle’s systems. By following these steps, you should be able to identify and resolve the issue related to the B1893 code.