What Does B1711 Mean?
This code indicates the Body Control Module (BCM) has detected a short to battery voltage in the driver's seat up switch circuit. The BCM monitors the switch input and expects to see ground or open circuit signals, but instead is receiving constant battery voltage when it shouldn't. This suggests unwanted battery voltage is feeding back into the switch circuit, preventing normal operation of the seat vertical adjustment function.
Common Causes
45%
Damaged or chafed wiring harness causing short to power wire in seat track or under seat
30%
Faulty seat up switch with internal short to power supply
15%
Corroded or damaged connector terminals at switch or BCM causing cross-circuit contamination
10%
Failed seat control module or BCM with internal circuit fault
Diagnostic Steps
1
Step 1: Perform visual inspection of driver's seat switch assembly and all visible wiring underneath and along seat tracks for obvious damage, chafing, pinched wires, or signs of liquid intrusion. Pay special attention to areas where harness flexes during seat movement.
2
Step 2: Disconnect the driver's seat switch connector and measure voltage on the switch circuit pin at the harness side with ignition on using a digital multimeter. Should read 0V or near ground; if battery voltage is present, wiring harness has a short to power between BCM and switch.
3
Step 3: With switch disconnected, perform resistance test on the suspect switch circuit wire from harness connector back toward BCM connector. Test resistance to battery power wire - should show open circuit (OL). Low resistance indicates short to power in harness.
4
Step 4: If harness tests pass, reconnect harness and test the switch itself by measuring resistance across switch terminals while actuating the up function. Should show continuity only when pressed. Continuous low resistance or voltage readings indicate faulty switch.
5
Step 5: Inspect and clean all connector terminals with electrical contact cleaner, checking for bent pins, corrosion, or evidence of terminal-to-terminal contact. Repair or replace connectors as needed.
6
Step 6: After repairs, clear codes, cycle seat operation through full range multiple times, and verify code does not return and switch functions normally in both directions.
Estimated Repair Cost
$100 - $450
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected a short to battery voltage in the driver's seat up switch circuit. The BCM monitors the switch input and expects to see ground or open circuit signals, but instead is receiving constant battery voltage when it shouldn't. This suggests un...
The most common cause of B1711 (Seat Driver Front Up Switch Circuit Short To Battery) is: Damaged or chafed wiring harness causing short to power wire in seat track or under seat
Typical repair costs for B1711 range from $100 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This fault does not affect vehicle drivability or safety systems and it is safe to continue driving. The only impact is loss of driver's seat upward adjustment function, which may cause discomfort but poses no immediate safety risk unless the seat position prevents proper vehicle operation.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1711 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
Body/Comfort/Seat Control System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
