What Does B1460 Mean?
This code indicates the Body Control Module (BCM) has detected that the wiper washer pump motor relay coil circuit is receiving unwanted voltage, showing a short to battery voltage condition. The BCM monitors the relay control circuit and has identified that battery voltage is present on the circuit when it should be at ground or a lower control voltage. This prevents proper relay operation and control of the windshield washer pump system.
Common Causes
45%
Damaged or chafed wiring harness causing short to battery voltage in relay control circuit
30%
Failed wiper washer pump relay with internal short circuit
15%
Faulty Body Control Module with shorted relay driver circuit
10%
Corrosion or moisture intrusion in relay socket or connector causing cross-circuit short
Diagnostic Steps
1
Step 1: Perform visual inspection of the wiper washer relay, relay socket, and all associated wiring for obvious damage, corrosion, melted terminals, or chafed insulation. Check for moisture intrusion in connectors.
2
Step 2: Remove the wiper washer pump relay and use a digital multimeter to measure voltage on the relay control terminal (typically pin 85 or 86) with ignition on. Reading should be 0V or near ground; battery voltage indicates short to power in wiring or BCM.
3
Step 3: With relay removed and ignition off, perform resistance test between relay control circuit terminal and battery positive. Resistance should be infinite (OL); low resistance confirms short to battery voltage. Check wiring harness routing for contact with hot circuits or damaged insulation.
4
Step 4: If wiring tests normal, test relay by checking coil resistance (typically 70-120 ohms) and verifying no continuity between coil and switch terminals. Replace relay if failed.
5
Step 5: If relay and wiring are verified good, suspect BCM internal relay driver failure. Disconnect BCM connector and retest control circuit for short to battery. If short disappears, BCM is faulty.
6
Step 6: After repairs, clear codes, operate washer system multiple times, and verify proper relay operation with no code return. Monitor live data for relay command and actual state.
Estimated Repair Cost
$75 - $600
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected that the wiper washer pump motor relay coil circuit is receiving unwanted voltage, showing a short to battery voltage condition. The BCM monitors the relay control circuit and has identified that battery voltage is present on the circuit...
The most common cause of B1460 (Wiper Washer Pump Motor Relay Coil Circuit Short To Battery) is: Damaged or chafed wiring harness causing short to battery voltage in relay control circuit
Typical repair costs for B1460 range from $75 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive as this only affects windshield washer function. Repair should be completed within reasonable time to maintain proper windshield cleaning capability for visibility, especially important in inclement weather or dusty conditions.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1460 to identify the root cause.
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Quick Info
Category
Body
System
Wiper/Washer System (Body Controls)
Difficulty
Type
Manufacturer
Recommended Tools
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