B2315 – OBD-II DTC

OBD-II DTC B2315 – Mirror Passenger Horizontal Feedback Potentiometer Circuit Short to Ground

DTC B2315 meaning

DTC B2315 refers to a diagnostic trouble code indicating a problem with the passenger side mirror’s horizontal feedback potentiometer circuit. This circuit is responsible for providing feedback to the vehicle’s control module regarding the position of the mirror. A short to ground in this circuit can disrupt the normal operation of the mirror adjustment system.

DTC B2315 symptoms

Common symptoms associated with DTC B2315 may include:

• The passenger side mirror may not adjust properly.
• Error messages may appear on the vehicle’s display.
• Other mirror-related functions, such as heating or folding, may be affected.
• In some cases, the vehicle may enter a fail-safe mode for the mirror system.

DTC B2315 causes

Several factors can lead to the occurrence of DTC B2315, including:

• A short circuit in the wiring harness connected to the mirror.
• Faulty or damaged feedback potentiometer within the mirror assembly.
• Corrosion or poor connections at the electrical connectors.
• Issues with the vehicle’s control module or software glitches.

DTC B2315 seriousness

The seriousness of DTC B2315 can vary depending on the vehicle’s use and the extent of the issue. While it may not pose an immediate safety risk, it can affect the driver’s ability to adjust the passenger mirror, potentially leading to visibility issues. It is advisable to address this code promptly to ensure proper functionality of the mirror system.

How to diagnose DTC B2315

To diagnose DTC B2315, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the wiring and connectors associated with the passenger mirror for any visible damage or corrosion.
3. Check the feedback potentiometer for proper resistance and functionality.
4. Test the control module for any software updates or faults.
5. Clear the DTC and perform a function test of the mirror to see if the code returns.

How to fix DTC B2315 step-by-step instructions

To fix DTC B2315, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on electrical components.
2. Inspect the wiring harness for any signs of damage, fraying, or shorts to ground.
3. Repair or replace any damaged wiring or connectors as necessary.
4. Remove the passenger side mirror assembly to access the feedback potentiometer.
5. Test the feedback potentiometer with a multimeter to ensure it operates within specifications.
6. If the potentiometer is faulty, replace it with a new one.
7. Reassemble the mirror and reconnect all electrical connections.
8. Reconnect the vehicle’s battery and clear the DTC using an OBD-II scanner.
9. Perform a function test of the mirror to ensure proper operation.

How to erase DTC B2315

To erase DTC B2315, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the vehicle’s ignition without starting the engine.
3. Navigate to the DTC menu on the scanner and select the option to clear or erase codes.
4. Confirm the action and wait for the scanner to complete the process.
5. Disconnect the scanner and perform a test drive to ensure the code does not return.

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