B1825 – Wiper Rear Park Sense Input Circuit Short To Ground

The ODBII code B1825 indicates a short circuit to ground in the rear wiper park sense input circuit, which affects the proper functioning of the rear wiper system.

The severity of ODBII code B1825 is moderate.

Common Causes For: B1824 Wiper Rear Park Sense Input Circuit Short To Battery

• Damaged wiring or connectors
• Shorted wires in the circuit
• Faulty rear wiper motor
• Malfunctioning rear wiper switch
• Corroded or loose connections
• Water intrusion in electrical components
• Faulty body control module (BCM)

Common misdiagnosis for B1825 Wiper Rear Park Sense Input Circuit Short To Ground

• Faulty rear wiper motor
• Damaged wiring or connectors
• Malfunctioning body control module (BCM)
• Incorrectly installed or defective rear wiper switch
• Shorted or damaged ground connections
• Issues with the rear wiper relay
• Faulty or corroded terminals in the circuit

Common Troubleshooting Steps

The OBD-II code B1825 refers to a problem with the rear wiper park sense input circuit, indicating that there is a short to ground in the circuit. Here are some common troubleshooting steps to diagnose and resolve this issue:

• Visual Inspection:
• Check the wiring and connectors associated with the rear wiper system. Look for any signs of damage, fraying, or corrosion.
• Inspect the rear wiper motor and its connections for any physical damage.
• Check for Shorts:
• Use a multimeter to check for continuity in the rear wiper park sense input circuit. Disconnect the connector from the rear wiper motor and check for continuity between the circuit and ground. If there is continuity, there is likely a short to ground.
• Test the Rear Wiper Motor:
• With the connector still disconnected, test the rear wiper motor for proper operation. Apply power directly to the motor to see if it functions correctly. If it does not work, the motor may be faulty and needs replacement.
• Inspect the Ground Connections:
• Ensure that all ground connections related to the rear wiper system are clean and secure. A poor ground can cause erratic behavior and trigger fault codes.
• Check the Wiper Switch:
• Test the rear wiper switch for proper operation. A malfunctioning switch can send incorrect signals to the wiper motor and cause issues.
• Scan for Additional Codes:
• Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues.
• Repair or Replace Faulty Components:
• If any damaged wiring, connectors, or components are found during the inspection, repair or replace them as necessary.
• Clear the Codes:
• After making repairs, clear the trouble codes using an OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Consult Service Manual:
• If the issue persists, consult the vehicle’s service manual for specific wiring diagrams and troubleshooting procedures related to the rear wiper system.
• Seek Professional Help:
• If you are unable to resolve the issue, consider seeking assistance from a qualified mechanic or automotive technician who can perform more advanced diagnostics. By following these steps, you should be able to identify and resolve the issue related to the B1825 code.