What Does B2601 Mean?
This code indicates the Body Control Module (BCM) detected that a power door system attempted to close but did not receive confirmation from the door latch position sensor that the door successfully latched. As a safety measure, the power door system reversed its operation to prevent pinching or damage. This affects powered sliding doors, liftgates, or tailgates with electric closure assist systems.
Common Causes
40%
Faulty or misaligned door latch assembly preventing proper engagement and sensor signal
30%
Damaged or corroded wiring harness between door latch sensor and BCM
20%
Obstruction preventing door from fully closing or mechanical binding in door tracks
10%
Failed Body Control Module (BCM) or power door control module
Diagnostic Steps
1
Step 1: Perform visual inspection of the affected door latch assembly, striker alignment, and door closure path for obstructions, debris, damage, or misalignment. Manually operate the door through full range of motion to check for binding or resistance.
2
Step 2: Using a multimeter, back-probe the door latch position sensor connector while manually cycling the latch to verify proper voltage signal changes (typically 0V open, 5V or 12V closed). Check manufacturer specifications for exact values.
3
Step 3: Inspect door wiring harness for damage, especially in flex areas between body and door. Perform continuity test on all latch sensor circuit wires from latch connector to BCM connector. Check for resistance values within 5 ohms and no shorts to ground or power.
4
Step 4: Monitor live data from scan tool while attempting power door closure to observe latch sensor state changes and door motor current draw. Verify BCM receives latch engagement signal within expected timeframe (typically 2-4 seconds).
5
Step 5: If wiring and sensor signals are correct, remove and bench-test the latch assembly by applying appropriate voltage to actuator while monitoring sensor output. Replace latch if it fails to provide proper feedback signal.
6
Step 6: Clear codes, perform door relearn/calibration procedure per manufacturer specifications, then cycle door through multiple open/close operations to verify repair and confirm no code returns.
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) detected that a power door system attempted to close but did not receive confirmation from the door latch position sensor that the door successfully latched. As a safety measure, the power door system reversed its operation to prevent pinching or dam...
The most common cause of B2601 (No Latch Signal Sensed on Closing and Door Reversed) is: Faulty or misaligned door latch assembly preventing proper engagement and sensor signal
Typical repair costs for B2601 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle is safe to drive, but the affected power door will not function automatically and may require manual closure. This creates a security risk if the door cannot latch properly and poses a minor safety concern if the door unexpectedly opens while driving. Repair within 1-2 weeks recommended.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B2601 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 Control and Power Door System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
