B1615 – OBD-II DTC

OBD-II DTC B1615 – Wiper Rear Disable Switch Circuit Failure

DTC B1615 meaning

DTC B1615 refers to a fault in the rear wiper disable switch circuit. This diagnostic trouble code indicates that the vehicle’s onboard diagnostic system has detected an issue with the electrical circuit responsible for controlling the rear wiper’s operation. The disable switch is intended to prevent the rear wiper from functioning under certain conditions, and a failure in this circuit can lead to improper wiper operation.

DTC B1615 symptoms

Common symptoms associated with DTC B1615 may include:

• Rear wiper not functioning at all
• Rear wiper operating continuously
• Intermittent operation of the rear wiper
• Dashboard warning lights illuminated

DTC B1615 causes

Several factors can lead to the occurrence of DTC B1615, including:

• Faulty rear wiper disable switch
• Wiring issues, such as shorts or open circuits
• Corroded or loose electrical connections
• Malfunctioning body control module (BCM)

DTC B1615 seriousness

The seriousness of DTC B1615 can vary depending on the specific symptoms and the vehicle’s usage. While it may not pose an immediate safety risk, it can lead to visibility issues in adverse weather conditions if the rear wiper is inoperative. It is advisable to address this code promptly to ensure proper vehicle functionality.

How to diagnose DTC B1615

To diagnose DTC B1615, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC B1615.
2. Inspect the rear wiper disable switch for physical damage or wear.
3. Check the wiring and connectors for signs of corrosion or damage.
4. Test the continuity of the circuit using a multimeter.
5. Examine the body control module for any faults or software issues.

How to fix DTC B1615 step-by-step instructions

To fix DTC B1615, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety.
2. Inspect and replace the rear wiper disable switch if faulty.
3. Repair or replace any damaged wiring or connectors in the circuit.
4. Reconnect the battery and clear the DTC using an OBD-II scanner.
5. Test the rear wiper operation to ensure proper functionality.

How to erase DTC B1615

To erase DTC B1615, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Access the diagnostic trouble codes menu on the scanner.
3. 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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