What Does B2593 Mean?
This diagnostic trouble code indicates that the Body Control Module (BCM) detected an interruption or obstruction while attempting to close the power sliding door. The door was manually or forcibly opened while the system was executing an automatic closing command. This represents a conflict between the commanded position and actual door position, triggering a safety fault in the power sliding door control system.
Common Causes
35%
Faulty door position sensor or misaligned sensor providing incorrect feedback to the BCM during door operation
30%
Physical obstruction or binding in door track/rollers preventing smooth closing operation
20%
Faulty power sliding door motor or module with intermittent operation or binding
10%
Damaged or pinched wiring harness in door jamb causing intermittent sensor signal loss
5%
User interference or unintentional manual opening during automatic close cycle
Diagnostic Steps
1
Step 1: Perform visual inspection of power sliding door track, rollers, and guides for debris, damage, or binding. Manually operate door through full range checking for smooth movement and any resistance points.
2
Step 2: Using scan tool live data, monitor door position sensor voltage/values while manually moving door slowly through entire travel range. Verify smooth progressive signal change without dropouts or erratic readings (typically 0.5-4.5V range).
3
Step 3: Inspect door jamb wiring harness for pinching, chafing, or broken wires. Flex harness while monitoring sensor data for signal interruptions. Check all connector terminals for corrosion, bent pins, or poor contact.
4
Step 4: Test power sliding door motor operation using scan tool actuator tests. Monitor current draw during operation (typically 8-15 amps normal, higher indicates binding or motor failure). Listen for abnormal motor noise or grinding.
5
Step 5: Check door latch mechanism and safety sensors for proper operation and alignment. Verify door fully latches in closed position and all safety sensors trigger appropriately when obstructed.
6
Step 6: Clear codes, perform relearn procedure for power sliding door if available, and cycle door through multiple open/close operations to verify repair and confirm code does not return.
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
This diagnostic trouble code indicates that the Body Control Module (BCM) detected an interruption or obstruction while attempting to close the power sliding door. The door was manually or forcibly opened while the system was executing an automatic closing command. This represents a conflict between...
The most common cause of B2593 (Power Sliding Door Opened During Module Close Command) is: Faulty door position sensor or misaligned sensor providing incorrect feedback to the BCM during door operation
Typical repair costs for B2593 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive, but the power sliding door function may be disabled or operate unpredictably, potentially creating a pinch hazard. Door should be manually operated until repaired to prevent injury or further system damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B2593 to identify the root cause.
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Quick Info
Category
Body
System
Body Control System - Power Sliding Door
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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