What Does B1715 Mean?
This diagnostic trouble code indicates that the Body Control Module (BCM) or seat control module has detected a short to battery voltage in the driver's front seat down switch circuit. The control module detected an abnormally high voltage (battery voltage) on the circuit that should normally operate at a lower reference voltage or ground signal. This means current is flowing through the switch circuit when it shouldn't be, or the circuit is receiving unintended voltage from another source.
Common Causes
45%
Damaged or chafed wiring harness causing short to power wire, typically under the seat where wires flex during seat movement
30%
Failed seat down switch with internal short to power, causing constant voltage feed
15%
Corroded or damaged connector at seat switch or seat control module allowing cross-circuit contamination
10%
Failed seat control module with internal circuit failure causing false battery voltage detection
Diagnostic Steps
1
Step 1: Perform visual inspection of driver seat wiring harness, focusing on areas under the seat rails where wires flex during movement. Look for chafed insulation, pinched wires, or signs of contact with metal seat components.
2
Step 2: Disconnect the driver seat down switch connector and measure voltage at the switch side connector terminal using a digital multimeter. With ignition on, you should read 0 volts; any battery voltage (12V+) confirms a short to power in the switch itself.
3
Step 3: If switch tests good, disconnect the seat control module connector and use a multimeter to measure resistance between the seat down switch circuit wire and battery positive circuits in the harness. Reading should be OL (open/infinite); any continuity indicates a harness short to power.
4
Step 4: Inspect all connectors in the seat circuit for corrosion, pushed-out pins, or moisture intrusion. Clean with electrical contact cleaner and ensure proper pin fit and sealing.
5
Step 5: After repairing identified wiring or replacing faulty switch, clear codes and operate the seat down function multiple times while monitoring live data for proper voltage signals (typically 0V when not pressed, switching to ground or reference voltage when activated).
Estimated Repair Cost
$120 - $450
Parts + labor, varies by vehicle and location
This diagnostic trouble code indicates that the Body Control Module (BCM) or seat control module has detected a short to battery voltage in the driver's front seat down switch circuit. The control module detected an abnormally high voltage (battery voltage) on the circuit that should normally operat...
The most common cause of B1715 (Seat Driver Front Down Switch Circuit Short To Battery) is: Damaged or chafed wiring harness causing short to power wire, typically under the seat where wires flex during seat movement
Typical repair costs for B1715 range from $120 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving as this affects comfort features only and does not impact vehicle operation or safety systems. The seat down function may not work properly, but the seat should remain securely mounted and other directional movements may still function.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1715 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Body
System
Power Seat Control System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
