What Does B0061 Mean?
This code indicates that the Body Control Module (BCM) or Restraint Control Module (RCM) has detected a fault in the passenger seat belt tension sensor or its associated circuit. The tension sensor monitors whether the seat belt is buckled and properly tensioned across the occupant. A subfault typically means a secondary or intermittent issue within the sensor circuit, such as signal voltage out of range, erratic readings, or communication errors.
Common Causes
45%
Faulty or damaged seat belt tension sensor/switch assembly
30%
Damaged, corroded, or loose wiring harness connector at seat belt buckle
15%
Broken or frayed wiring between seat belt sensor and control module
10%
Faulty Body Control Module or Restraint Control Module
Diagnostic Steps
1
Step 1: Perform visual inspection of passenger seat belt buckle assembly and tension sensor for physical damage, debris, or foreign objects that may interfere with operation. Check for proper mechanical function by buckling and unbuckling several times.
2
Step 2: Inspect wiring harness and connector at the seat belt buckle for corrosion, bent pins, water intrusion, or physical damage. Disconnect connector and inspect terminals for green corrosion or burning. Clean contacts with electrical contact cleaner if needed.
3
Step 3: Using a digital multimeter, measure voltage and continuity at the seat belt tension sensor connector with ignition on. Verify reference voltage (typically 5V), ground continuity (less than 1 ohm), and signal wire voltage changes when buckle is engaged/disengaged per manufacturer specifications.
4
Step 4: Check wiring harness continuity from seat belt buckle connector to the BCM/RCM connector by measuring resistance on each wire (should be less than 5 ohms). Also check for shorts to ground or power on signal wires (should show infinite resistance).
5
Step 5: If all wiring and connections test good, substitute with known-good seat belt buckle/tension sensor assembly and retest. Clear codes and perform operational test by buckling/unbuckling seat belt while monitoring live data.
6
Step 6: If problem persists after sensor replacement and all circuits test normal, suspect control module fault. Verify module ground connections and power supply before condemning module. Clear codes and verify repair with functional test of seat belt warning system.
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
This code indicates that the Body Control Module (BCM) or Restraint Control Module (RCM) has detected a fault in the passenger seat belt tension sensor or its associated circuit. The tension sensor monitors whether the seat belt is buckled and properly tensioned across the occupant. A subfault typic...
The most common cause of B0061 (Passenger Seatbelt Tension Sensor (Subfault)) is: Faulty or damaged seat belt tension sensor/switch assembly
Typical repair costs for B0061 range from $150 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle is safe to drive, but the seat belt warning system and airbag deployment calibration may be affected. The airbag system may not deploy optimally for the passenger side if it cannot detect proper seat belt usage, and seat belt warning chimes/lights may malfunction. Repair should be completed promptly to ensure full safety system functionality.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B0061 to identify the root cause.
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Quick Info
Category
Body
System
Supplemental Restraint System (SRS) / Occupant Safety System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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