B1244 – OBD-II DTC

OBD-II DTC B1244 – Wiper Rear Motor Run Relay Circuit Failure

DTC B1244 meaning

DTC B1244 refers to a diagnostic trouble code indicating a failure in the rear wiper motor run relay 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 motor run relay is responsible for supplying power to the rear wiper motor, and a failure in this circuit can prevent the rear wiper from functioning properly.

DTC B1244 symptoms

Common symptoms associated with DTC B1244 may include:

• Rear wiper not functioning at all
• Intermittent operation of the rear wiper
• Rear wiper operates but with reduced speed
• Dashboard warning lights may illuminate

DTC B1244 causes

Several factors can lead to the occurrence of DTC B1244, including:

• Faulty rear wiper motor
• Defective rear wiper motor run relay
• Wiring issues, such as shorts or open circuits
• Corroded or loose electrical connections
• Faulty body control module (BCM)

DTC B1244 seriousness

The seriousness of DTC B1244 can vary depending on the situation. While it may not affect the overall drivability of the vehicle, it can hinder visibility during inclement weather if the rear wiper is inoperative. Therefore, it is advisable to address this issue promptly to ensure safe driving conditions.

How to diagnose DTC B1244

To diagnose DTC B1244, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1244 code.
2. Inspect the rear wiper motor and relay for visible damage or corrosion.
3. Check the wiring and connectors for any signs of wear or disconnection.
4. Test the rear wiper motor by applying direct power to see if it operates.
5. Use a multimeter to check the voltage and continuity in the relay circuit.
6. Examine the body control module for any faults or error codes.

How to fix DTC B1244 step-by-step instructions

To fix DTC B1244, follow these step-by-step instructions:

1. Clear the DTC using an OBD-II scanner.
2. If the code reappears, inspect and replace the rear wiper motor if faulty.
3. Replace the rear wiper motor run relay if it is defective.
4. Repair or replace any damaged wiring or connectors in the circuit.
5. Ensure all electrical connections are clean and secure.
6. Test the system to confirm that the rear wiper operates correctly.

How to erase DTC B1244

To erase DTC B1244, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition key to the “On” position 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 check if the code returns.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.