B1241 – OBD-II DTC

OBD-II DTC B1241 – Wiper Washer Rear Pump Relay Circuit Short to Battery

DTC B1241 meaning

DTC B1241 refers to a diagnostic trouble code indicating a short circuit in the rear wiper washer pump relay circuit to the battery. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle systems for faults. When the system detects that the rear wiper washer pump relay circuit is shorted to battery voltage, it triggers this specific code.

DTC B1241 symptoms

Common symptoms associated with DTC B1241 may include:

• Inoperative rear wiper washer system
• Continuous operation of the rear wiper washer pump
• Blown fuses related to the wiper washer system
• Dashboard warning lights illuminated

DTC B1241 causes

Several factors can lead to the occurrence of DTC B1241, including:

• Faulty rear wiper washer pump relay
• Wiring issues, such as frayed or damaged wires
• Short circuits in the wiring harness
• Defective rear wiper washer pump
• Corrosion or poor connections in the relay circuit

DTC B1241 seriousness

The seriousness of DTC B1241 can vary based on the vehicle’s use and the specific symptoms present. While it may not affect the vehicle’s drivability, it can lead to reduced visibility in adverse weather conditions if the rear wiper washer system is inoperative. Therefore, it is advisable to address this issue promptly to ensure safe driving conditions.

How to diagnose DTC B1241

To diagnose DTC B1241, follow these steps:

• Use an OBD-II scanner to confirm the presence of the code.
• Inspect the rear wiper washer pump relay and its connections for damage or corrosion.
• Check the wiring harness for any signs of shorts or frayed wires.
• Test the rear wiper washer pump for proper operation.
• Examine the vehicle’s fuse box for blown fuses related to the wiper washer system.

How to fix DTC B1241 step-by-step instructions

To fix DTC B1241, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect and replace the rear wiper washer pump relay if it is found to be faulty.
3. Repair or replace any damaged wiring or connectors in the relay circuit.
4. Test the rear wiper washer pump to ensure it operates correctly.
5. Replace any blown fuses related to the wiper washer system.
6. Reconnect the battery and clear the DTC using an OBD-II scanner.
7. Test the rear wiper washer system to confirm proper operation.

How to erase DTC B1241

To erase DTC B1241, follow these steps:

• Connect an OBD-II scanner to the vehicle’s diagnostic port.
• Turn on the vehicle’s ignition without starting the engine.
• Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
• Follow the prompts to clear the trouble codes from the vehicle’s computer.
• Disconnect the scanner and start the vehicle to ensure the code does not reappear.

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