What Does B1544 Mean?
This code indicates the Body Control Module (BCM) or seat control module has detected an open circuit in the power seat directional switch assembly. The switch assembly allows the occupant to move the seat forward, backward, up, down, and tilt positions. An open circuit means there is a break in electrical continuity preventing the switch signals from reaching the control module.
Common Causes
40%
Broken or disconnected wiring harness connector at seat switch assembly or control module
30%
Failed seat direction switch assembly with internal open circuit
20%
Damaged or broken wires in harness under seat due to seat track movement or pinching
10%
Corroded or loose connector pins at switch or module causing intermittent open circuit
Diagnostic Steps
1
Step 1: Perform visual inspection of seat switch assembly and all connectors for obvious damage, disconnection, or corrosion. Check connector locking tabs and ensure all connections are fully seated.
2
Step 2: Using a multimeter, check for continuity across each directional switch terminal with switch in rest position and activated positions. Expected reading should be infinite resistance (open) at rest and near zero ohms when activated for most designs.
3
Step 3: Disconnect seat switch connector and inspect terminals for bent pins, corrosion, or damage. Check harness side connector for proper voltage supply (typically 12V or 5V reference) and ground using multimeter or test light.
4
Step 4: Trace wiring harness under seat track area, checking for pinched, chafed, or broken wires. Gently flex harness while monitoring continuity to identify intermittent opens. Pay attention to areas where harness moves with seat adjustment.
5
Step 5: If all wiring and connections test good, substitute a known good seat switch assembly or test resistance values of switch according to manufacturer specifications to confirm switch failure.
6
Step 6: After repair, clear codes, cycle seat switch through all directional positions multiple times, and verify code does not return and seat functions operate correctly.
Estimated Repair Cost
$75 - $450
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) or seat control module has detected an open circuit in the power seat directional switch assembly. The switch assembly allows the occupant to move the seat forward, backward, up, down, and tilt positions. An open circuit means there is a break in ele...
The most common cause of B1544 (Seat Direction Switch Assembly Circuit Open) is: Broken or disconnected wiring harness connector at seat switch assembly or control module
Typical repair costs for B1544 range from $75 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This code does not affect vehicle operation or safety to drive. The power seat adjustment feature will not function properly, requiring manual positioning if available, but poses no immediate safety risk. Repair can be scheduled at convenience.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1544 to identify the root cause.
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Quick Info
Category
Body
System
Power Seat Control System
Difficulty
Type
Manufacturer
Recommended Tools
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