B1823 – OBD-II DTC

OBD-II DTC B1823 – Wiper Rear Park Sense Input Circuit Open

DTC B1823 meaning

DTC B1823 refers to a diagnostic trouble code indicating an issue with the rear wiper park sense input circuit. This code is triggered when the vehicle’s onboard diagnostic system detects an open circuit in the rear wiper park sense input, which is responsible for signaling the wiper motor when to stop in the parked position.

DTC B1823 symptoms

Common symptoms associated with DTC B1823 may include:

• Rear wiper not functioning properly
• Wiper motor may run continuously
• Wiper may not return to the parked position
• Dashboard warning lights may illuminate

DTC B1823 causes

Several factors can lead to the triggering of DTC B1823, including:

• Open or damaged wiring in the rear wiper park sense circuit
• Faulty rear wiper motor
• Defective wiper park switch
• Corrosion or poor connections in the electrical system
• Issues with the vehicle’s body control module (BCM)

DTC B1823 seriousness

The seriousness of DTC B1823 can vary. While it may not affect the vehicle’s overall drivability, it can lead to safety concerns if the rear wiper does not operate correctly in adverse weather conditions. It is advisable to address this issue promptly to ensure proper visibility and functionality.

How to diagnose DTC B1823

To diagnose DTC B1823, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Inspect the wiring and connectors related to the rear wiper park sense circuit for damage or corrosion.
3. Test the rear wiper motor and park switch for proper operation.
4. Check the body control module for any faults or issues.
5. Clear the code and perform a functional test of the rear wiper system.

How to fix DTC B1823 step-by-step instructions

To fix DTC B1823, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect the wiring harness for the rear wiper park sense circuit for any signs of damage or disconnection.
3. Repair or replace any damaged wires or connectors as necessary.
4. Test the rear wiper motor and park switch for functionality, replacing them if they are faulty.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test the rear wiper system to ensure it operates correctly and returns to the parked position.

How to erase DTC B1823

To erase DTC B1823, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the trouble codes section on the scanner.
4. Select the option to clear or erase the codes.
5. Confirm the action and wait for the scanner to indicate that the codes have been cleared.
6. Disconnect the scanner and perform a test drive to ensure the code does not reappear.

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