B2185 – OBD-II DTC

OBD-II DTC B2185 – Rear Wiper Select Switch “D” Short to Ground

DTC B2185 meaning

DTC B2185 refers to a diagnostic trouble code indicating a “Rear Wiper Select Switch ‘D’ Short to Ground.” This code is generated when the vehicle’s onboard diagnostic system detects that the rear wiper select switch is experiencing an electrical short to ground, which can affect the operation of the rear wiper system.

DTC B2185 symptoms

Common symptoms associated with DTC B2185 may include:

• Rear wiper not functioning
• Intermittent operation of the rear wiper
• Wiper motor running continuously
• Dashboard warning lights illuminated

DTC B2185 causes

Several factors can lead to the occurrence of DTC B2185, including:

• Faulty rear wiper select switch
• Damaged wiring or connectors in the rear wiper circuit
• Short circuit in the electrical system
• Malfunctioning rear wiper motor

DTC B2185 seriousness

The seriousness of DTC B2185 can vary. While it may not pose an immediate safety risk, it can lead to reduced visibility in adverse weather conditions if the rear wiper is inoperative. It is advisable to address this issue promptly to ensure proper vehicle functionality.

How to diagnose DTC B2185

To diagnose DTC B2185, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the rear wiper select switch for physical damage or wear.
3. Check the wiring and connectors for signs of corrosion or shorts.
4. Test the rear wiper motor for proper operation.
5. Perform continuity tests on the switch and wiring to identify shorts to ground.

How to fix DTC B2185 step-by-step instructions

To fix DTC B2185, follow these steps:

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

How to erase DTC B2185

To erase DTC B2185, 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 “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the vehicle to verify that the code does not reappear.

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