B1416 – Power Window LR Motor Circuit Short To Battery

The ODBII code B1416 indicates a short circuit in the left rear power window motor circuit, meaning there is an unintended connection to the battery voltage, which can cause the motor to malfunction.

The severity of ODBII code B1416 is moderate.

Common Causes For: B1415 Power Window LR Motor Circuit Open

• Shorted wiring or connectors
• Faulty power window motor
• Damaged window switch
• Grounding issues
• Corroded or damaged electrical connections
• Faulty body control module (BCM)

Common misdiagnosis for B1416 Power Window LR Motor Circuit Short To Battery

• Faulty power window switch
• Defective window motor
• Wiring harness issues
• Blown fuse
• Body control module (BCM) failure
• Ground connection problems
• Incorrectly installed window regulator

Common Troubleshooting Steps

When dealing with an OBD-II code B1416, which indicates a “Power Window Left Rear Motor Circuit Short to Battery,” there are several common troubleshooting steps you can follow to diagnose and potentially resolve the issue. Here’s a structured approach:

• Visual Inspection: **Wiring and Connectors: Check the wiring harness and connectors leading to the left rear power window motor for any signs of damage, fraying, or corrosion.
• **Ground Connections: Ensure that the ground connections are secure and free of corrosion.
• Check the Power Window Switch: **Functionality: Test the power window switch for proper operation. A faulty switch can cause a short circuit.
• **Continuity Test: Use a multimeter to check for continuity in the switch when pressed.
• Inspect the Power Window Motor: **Motor Condition: Check the left rear power window motor for any signs of damage or wear.
• **Bench Test: If possible, remove the motor and bench test it by applying direct battery voltage to see if it operates correctly.
• Check for Short Circuits: **Wiring Inspection: Look for any pinched or damaged wires that may be causing a short to battery.
• **Multimeter Testing: Use a multimeter to check for continuity between the power window motor circuit and the battery positive terminal. A reading indicates a short.
• Inspect the Window Regulator: **Regulator Condition: Check the window regulator for any binding or mechanical issues that could cause the motor to draw excessive current.
• **Free Movement: Ensure that the window moves freely up and down without obstruction.
• Check Fuses and Relays: **Fuses: Inspect the fuses related to the power window system for any blown fuses.
• **Relays: If applicable, check the relays for the power window system to ensure they are functioning properly.
• Scan for Additional Codes: **OBD-II Scanner: Use an OBD-II scanner to check for any additional trouble codes that may provide more context to the issue.
• Clear Codes and Test Drive: **Clear Codes: After performing the above checks and repairs, clear the trouble codes using an OBD-II scanner.
• **Test Drive: Take the vehicle for a test drive and operate the power window to see if the code returns.
• Consult Repair Manual: If the issue persists, consult the vehicle’s repair manual for specific wiring diagrams and troubleshooting procedures related to the power window system.
• Seek Professional Help: If you are unable to resolve the issue after following these steps, it may be best to consult a professional mechanic for further diagnosis and repair. By following these steps, you should be able to identify the cause of the B1416 code and take appropriate action to fix the issue.