B1416 – OBD-II DTC

OBD-II DTC B1416 – Power Window LR Motor Circuit Short To Battery

DTC B1416 meaning

DTC B1416 refers to a diagnostic trouble code indicating a short circuit in the power window left rear (LR) motor circuit to the battery. This code is triggered when the vehicle’s onboard diagnostic system detects an abnormal voltage level in the circuit, suggesting that the motor is receiving power directly from the battery rather than through the intended control mechanisms.

DTC B1416 symptoms

Common symptoms associated with DTC B1416 may include:

• Left rear power window not functioning
• Power window motor may be continuously running
• Increased battery drain
• Possible blown fuses related to the power window system
• Intermittent operation of the power window

DTC B1416 causes

Several factors can lead to the triggering of DTC B1416, including:

• Short circuit in the wiring harness
• Faulty power window motor
• Defective window switch
• Corroded or damaged connectors
• Issues with the body control module (BCM)

DTC B1416 seriousness

DTC B1416 is considered a moderate to serious issue. While it may not immediately affect the vehicle’s drivability, it can lead to:

• Inability to operate the left rear window
• Potential battery drain if the motor is stuck in the “on” position
• Increased risk of electrical system damage

How to diagnose DTC B1416

To diagnose DTC B1416, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC B1416.
2. Inspect the wiring and connectors for visible damage or corrosion.
3. Check the power window motor for proper operation.
4. Test the window switch for functionality.
5. Examine the body control module for any faults.
6. Perform a continuity test on the wiring harness.

How to fix DTC B1416 step-by-step instructions

To fix DTC B1416, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety.
2. Inspect and repair any damaged wiring or connectors in the power window circuit.
3. Replace the power window motor if it is found to be faulty.
4. Test and replace the window switch if necessary.
5. Check the body control module for any updates or replacements needed.
6. Reconnect the battery and clear the DTC using an OBD-II scanner.

How to erase DTC B1416

To erase DTC B1416, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition key to the “ON” position without starting the engine.
3. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the vehicle to ensure the code does not return.

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