What Does B1244 Mean?
This code indicates that the Body Control Module (BCM) has detected a malfunction in the rear wiper motor run relay circuit. The BCM monitors the relay control circuit and has identified either an open circuit, short circuit, excessive resistance, or relay failure preventing proper operation of the rear wiper motor. This is a manufacturer-specific code that specifically affects the rear window wiper system's relay control circuit.
Common Causes
35%
Faulty rear wiper motor run relay with burnt or stuck contacts
30%
Damaged, corroded, or loose wiring and connectors in the relay control circuit
20%
Failed rear wiper motor creating excessive current draw causing relay circuit protection
10%
BCM internal relay driver circuit failure or software issue
5%
Blown fuse or fusible link in the rear wiper motor relay power supply circuit
Diagnostic Steps
1
Step 1: Locate the rear wiper motor run relay (typically in underhood or interior fuse box) and perform visual inspection of the relay and socket for signs of burning, corrosion, or damage. Remove relay and inspect terminal pins for discoloration.
2
Step 2: With relay removed and ignition on, use a digital multimeter to verify battery voltage (12-14V) at the relay socket power supply terminal. Check for continuity to ground on the ground terminal.
3
Step 3: Command the rear wiper motor relay ON using scan tool active tests or bidirectional controls while measuring voltage at the BCM control terminal of the relay socket. Should see switching between 0V (relay ON) and 12V (relay OFF).
4
Step 4: Install a known-good relay and test rear wiper operation. If still inoperative, disconnect rear wiper motor connector and measure resistance of motor (typically 2-6 ohms) and check for current draw when energized directly with jumper wires.
5
Step 5: Inspect all wiring harness connectors between BCM, relay, and wiper motor for corrosion, pushed-back pins, or damaged terminals. Perform continuity tests on all circuits with connectors disconnected.
6
Step 6: Clear codes and cycle the rear wiper system through all functions to verify proper operation and confirm no code returns. Monitor relay operation and current draw with multimeter during testing.
Estimated Repair Cost
$75 - $450
Parts + labor, varies by vehicle and location
This code indicates that the Body Control Module (BCM) has detected a malfunction in the rear wiper motor run relay circuit. The BCM monitors the relay control circuit and has identified either an open circuit, short circuit, excessive resistance, or relay failure preventing proper operation of the ...
The most common cause of B1244 (Wiper Rear Motor Run Relay Circuit Failure) is: Faulty rear wiper motor run relay with burnt or stuck contacts
Typical repair costs for B1244 range from $75 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving as this only affects rear window visibility cleaning function. Repair at convenience, though reduced rear visibility in inclement weather may present safety concerns depending on driving conditions.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1244 to identify the root cause.
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Quick Info
Category
Body
System
Body Control System - Rear Wiper Assembly
Difficulty
Type
Manufacturer
Recommended Tools
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