B1825 – OBD-II DTC

OBD-II DTC B1825 – Wiper Rear Park Sense Input Circuit Short To Ground

DTC B1825 meaning

DTC B1825 refers to a diagnostic trouble code indicating a short to ground in the rear wiper park sense input circuit. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components and systems for faults. The rear wiper park sense input circuit is responsible for detecting the position of the rear wiper when it is in the parked position. A short to ground means that there is an unintended connection between the circuit and the ground, which can disrupt normal operation.

DTC B1825 symptoms

Common symptoms associated with DTC B1825 may include:

• Rear wiper not functioning properly
• Rear wiper not returning to the park position
• Intermittent operation of the rear wiper
• Dashboard warning lights illuminated

DTC B1825 causes

Several factors can lead to the occurrence of DTC B1825, including:

• Damaged wiring or connectors in the rear wiper circuit
• Faulty rear wiper motor
• Corrosion or dirt in the electrical connections
• Short circuit due to insulation failure
• Malfunctioning body control module (BCM)

DTC B1825 seriousness

The seriousness of DTC B1825 can vary depending on the symptoms experienced. While it may not pose an immediate safety risk, it can lead to:

• Reduced visibility in inclement weather due to non-functioning rear wiper
• Increased wear on the rear wiper motor
• Potential for further electrical issues if not addressed

It is advisable to diagnose and repair the issue promptly to ensure proper vehicle operation.

How to diagnose DTC B1825

To diagnose DTC B1825, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC B1825.
2. Inspect the wiring and connectors related to the rear wiper circuit for damage or corrosion.
3. Check the rear wiper motor for proper operation.
4. Test the continuity of the park sense input circuit.
5. Examine the body control module (BCM) for faults.
6. Clear the DTC and perform a functional test of the rear wiper.

How to fix DTC B1825 step-by-step instructions

To fix DTC B1825, 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 and connectors for any signs of damage or corrosion.
3. If damaged wiring is found, repair or replace the affected sections.
4. Test the rear wiper motor for functionality replace it if it is faulty.
5. Check the park sense input circuit for shorts to ground and repair as necessary.
6. Reconnect all connectors and wiring, ensuring they are secure and free of corrosion.
7. Reconnect the battery and use an OBD-II scanner to clear the DTC.
8. Perform a functional test of the rear wiper to ensure proper operation.

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