B2115 – OBD-II DTC

OBD-II DTC B2115 – Rear Washer Input Short to Ground

DTC B2115 meaning

DTC B2115 refers to a diagnostic trouble code indicating a “Rear Washer Input Short to Ground.” This code is triggered when the vehicle’s onboard diagnostic system detects that the rear washer input circuit is shorted to ground, which can prevent the rear washer from functioning properly.

DTC B2115 symptoms

Common symptoms associated with DTC B2115 may include:

• Inoperable rear washer system
• Dashboard warning lights illuminated
• Possible malfunction of related components, such as the rear wiper

DTC B2115 causes

The causes of DTC B2115 can vary, but typical reasons include:

• Short circuit in the wiring harness
• Faulty rear washer switch
• Defective rear washer motor
• Corroded or damaged connectors

DTC B2115 seriousness

DTC B2115 is considered a moderate issue. While it may not affect the vehicle’s overall drivability, it can impair visibility during inclement weather due to the inoperable rear washer system. Addressing this code promptly is advisable to ensure safe driving conditions.

How to diagnose DTC B2115

To diagnose DTC B2115, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B2115 code.
2. Inspect the wiring and connectors related to the rear washer system for any visible damage or corrosion.
3. Test the rear washer switch for proper operation.
4. Check the rear washer motor for functionality.
5. Perform a continuity test on the wiring harness to identify any shorts to ground.

How to fix DTC B2115 step-by-step instructions

To fix DTC B2115, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect and repair any damaged wiring or connectors found during diagnosis.
3. Replace the rear washer switch if it is found to be faulty.
4. Test and replace the rear washer motor if it is not functioning correctly.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test the rear washer system to ensure it operates correctly.

How to erase DTC B2115

To erase DTC B2115, 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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