The OBD-II trouble code B1244, indicating a „Wiper Rear Motor Run Relay Circuit Failure,” points to an issue within your vehicle’s rear windshield wiper system. Specifically, this code signals a malfunction in the electrical circuit that controls the relay responsible for powering the rear wiper motor. When this relay circuit fails, it can result in the rear wiper not operating correctly or stopping altogether—affecting visibility and safety during adverse weather conditions. If you’ve encountered this code, keep scrolling! In this article, you’ll find practical guidance on how to identify the symptoms, understand the common causes, and perform effective repairs to get your rear wiper back in proper working order.

What symptoms might indicate the B1244 error?

A malfunction in the rear wiper system can cause several noticeable symptoms for a driver. Recognizing these signs early can help prevent further inconvenience or damage.

  • 1. Rear wiper inactivity: The rear wiper does not activate when switched on.
  • 2. Intermittent operation: The rear wiper works sporadically or stops unexpectedly.
  • 3. Unusual noises: Clicking or buzzing sounds coming from the rear wiper area.
  • 4. Delayed response: A noticeable lag occurs before the rear wiper starts moving.
  • 5. Rear wiper failure to park: The rear wiper blade does not return to its resting position after use.

      • Common reasons that can lead to error code B1244

      This error typically indicates an issue within the rear wiper motor relay circuit. Several technical problems can cause this malfunction to occur.

      • 1. Faulty Relay: The relay responsible for controlling the rear wiper motor may be defective or have internal contact issues.
      • 2. Wiring Harness Damage: Damaged or corroded wiring in the relay circuit can interrupt proper electrical flow.
      • 3. Poor Electrical Connections: Loose or oxidized connectors can cause intermittent or failed signals to the rear wiper motor.
      • 4. Rear Wiper Motor Failure: A malfunctioning motor may draw excessive current, triggering a relay circuit fault.
      • 5. Blown Fuse: A blown fuse in the rear wiper circuit can result in a loss of power and relay circuit failure.

      B1244 at-home error code check step by step

      Diagnosing a potential issue with the Wiper Rear Motor Run Relay Circuit at home is entirely feasible using basic tools and an OBD-II scanner. By following a systematic approach, you can identify whether the relay or related wiring is causing the malfunction without needing professional diagnostic equipment.

      Start by connecting an OBD-II scanner to your vehicle’s diagnostic port, usually located under the dashboard. Use the scanner to confirm the presence of any related fault codes and monitor live data for the rear wiper operation. Next, with the ignition on but the engine off, listen for a clicking sound from the rear wiper relay as you activate the rear wiper switch—this indicates whether the relay is receiving power and attempting to engage. If no click is heard, use a multimeter to check for voltage at the relay coil terminals while toggling the wiper switch; absence of voltage suggests a wiring or control circuit problem. Finally, test continuity between the relay output and the rear wiper motor to ensure there are no broken wires or poor connections hindering operation.

      B1244 error repair at home: What can you do yourself and when do you need a mechanic?

      The rear wiper motor relay circuit issue can often be addressed with some simple at-home checks and repairs. These steps may help you avoid unnecessary trips to a professional service center.

      • 1. Fuse Inspection: Check the fuse related to the rear wiper motor relay circuit and replace it if it is blown.
      • 2. Relay Cleaning: Remove the relay from its socket and clean the contacts with electrical contact cleaner to ensure proper connection.
      • 3. Wiring Check: Inspect the wiring harness for any visible signs of damage, corrosion, or loose connections and secure or repair as needed.
      • 4. Connector Re-seating: Disconnect and reconnect the connectors associated with the rear wiper motor to eliminate poor contact issues.

      If these steps do not resolve the problem or if you observe persistent electrical faults, it is advisable to seek assistance from a qualified automotive technician for a thorough diagnosis and repair.

      Consequences of error B1244 if you don’t fix it in time

      Ignoring this issue can lead to several long-term problems affecting vehicle performance and safety. Addressing these consequences promptly is crucial to avoid further damage.

      • 1. Reduced Visibility: Impaired rear wiper function can drastically decrease rear window visibility during adverse weather, increasing the risk of accidents.
      • 2. Electrical System Damage: Prolonged relay circuit failure may cause electrical shorts or overloads, potentially damaging other components in the vehicle’s electrical system.
      • 3. Increased Repair Costs: Neglecting the problem can lead to more extensive damage, resulting in higher repair expenses over time.
      • 4. Safety Hazards: Malfunctioning rear wipers compromise driver awareness and reaction time, elevating the likelihood of collisions.
      • 5. Decreased Vehicle Resale Value: Persistent unresolved issues reflect poorly on vehicle maintenance, reducing its market value significantly.

          • Here’s how to prevent the B1244 error with a few simple steps

          Wiper rear motor run relay circuit failures can lead to inconvenient and potentially unsafe driving conditions. Implementing proper maintenance routines helps prevent such issues effectively.