What Does B1476 Mean?
This code indicates the Body Control Module (BCM) has detected a failure in the high-speed circuit of the windshield wiper motor. The BCM monitors current flow and feedback signals from the wiper motor, and has determined that when high-speed operation is commanded, the motor is not responding correctly or drawing abnormal current. This suggests either an electrical fault in the high-speed circuit path, internal motor failure, or a control module issue.
Common Causes
45%
Wiper motor internal failure (burned high-speed winding or brushes)
30%
Damaged or corroded wiring/connectors in high-speed circuit between BCM and wiper motor
15%
Faulty wiper relay or internal BCM relay for high-speed operation
10%
Poor ground connection at wiper motor or BCM
Diagnostic Steps
1
Step 1: Perform visual inspection of wiper motor connector and harness for corrosion, damaged pins, melted terminals, or loose connections. Check for signs of water intrusion at motor housing.
2
Step 2: With ignition on and wipers in high-speed mode, use a digital multimeter to measure voltage at the wiper motor high-speed terminal (typically 12V should be present). If no voltage, trace circuit back toward BCM/relay.
3
Step 3: Disconnect wiper motor connector and use multimeter to measure resistance across motor terminals. Check high-speed winding resistance (typically 3-8 ohms) and compare to low-speed. Infinite resistance indicates open winding.
4
Step 4: Test motor directly by applying 12V power and ground to high-speed terminal with motor disconnected from vehicle harness. If motor fails to operate at high speed, motor is defective.
5
Step 5: Check ground circuit continuity from wiper motor ground terminal to chassis ground (should be less than 1 ohm resistance). Clean and tighten ground connections if resistance is high.
6
Step 6: If all wiring and motor test good, verify BCM output signal and relay operation using wiring diagram. Monitor BCM command signal with scan tool while activating high-speed wipers to confirm BCM is sending proper command.
Estimated Repair Cost
$150 - $450
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected a failure in the high-speed circuit of the windshield wiper motor. The BCM monitors current flow and feedback signals from the wiper motor, and has determined that when high-speed operation is commanded, the motor is not responding corre...
The most common cause of B1476 (Wiper High Speed Circuit Motor Failure) is: Wiper motor internal failure (burned high-speed winding or brushes)
Typical repair costs for B1476 range from $150 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle can typically still operate wipers on low speed and intermittent settings, but loss of high-speed function creates significant safety risk during heavy rain or snow. Repair should be completed promptly before driving in adverse weather conditions.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1476 to identify the root cause.
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Quick Info
Category
Body
System
Body Control System - Windshield Wiper System
Difficulty
Type
Manufacturer
Recommended Tools
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