What Does B1474 Mean?
This code indicates the Body Control Module (BCM) has detected an unwanted voltage (short to battery positive) in the battery saver power relay control circuit. The battery saver relay is designed to disconnect non-essential electrical loads when the ignition is off to prevent battery drain. The BCM detected that the relay circuit has constant battery voltage when it should be controlled or de-energized, suggesting a wiring fault or relay malfunction.
Common Causes
45%
Damaged or chafed wiring harness causing the relay control wire to contact a power source
30%
Failed battery saver power relay with internal short circuit
15%
Corroded or damaged connector pins at the BCM or relay creating unintended power path
10%
Failed Body Control Module with internal short in relay driver circuit
Diagnostic Steps
1
Step 1: Perform visual inspection of battery saver relay and associated wiring harness. Look for chafed insulation, melted wires, burned connectors, or signs of water intrusion. Check routing near sharp edges or moving components.
2
Step 2: Locate and remove the battery saver power relay from its mounting location. Using a multimeter, check for continuity between relay terminals with ignition off - there should be no continuity between coil terminals and switch terminals in de-energized state.
3
Step 3: Disconnect the BCM connector. With ignition off, measure voltage on the relay control wire at the BCM connector and at the relay socket using a multimeter. There should be 0V; if battery voltage is present, trace the wire for short to power between these points.
4
Step 4: If wiring tests normal, reconnect all components and monitor live data for battery saver relay command vs actual state using scan tool. Command the relay on/off if active test available. Replace relay if it does not respond properly to commands.
5
Step 5: If relay and wiring are confirmed good, inspect BCM connector terminals for corrosion, bent pins, or evidence of overheating. Clean or repair as needed, then retest. If fault persists, BCM replacement may be necessary.
Estimated Repair Cost
$100 - $650
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected an unwanted voltage (short to battery positive) in the battery saver power relay control circuit. The battery saver relay is designed to disconnect non-essential electrical loads when the ignition is off to prevent battery drain. The BCM...
The most common cause of B1474 (Battery Saver Power Relay Circuit Short To Battery) is: Damaged or chafed wiring harness causing the relay control wire to contact a power source
Typical repair costs for B1474 range from $100 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is generally safe to drive, but the battery saver function is compromised which may lead to battery drain when parked for extended periods. Continued operation with this fault may cause damage to the BCM or create fire risk if the short worsens. Repair should be completed within a few days.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1474 to identify the root cause.
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Quick Info
Category
Body
System
Body Electrical System
Difficulty
Type
Manufacturer
Recommended Tools
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