What Does B2607 Mean?
DTC B2607 indicates the Body Control Module (BCM) has detected an abnormal voltage or signal from the seat position sensor circuit. This sensor monitors the position of the driver or passenger seat for memory functions, airbag calibration, and comfort features. The BCM has identified either an open circuit, short circuit, or out-of-range sensor reading that prevents proper seat position detection.
Common Causes
35%
Faulty seat position sensor or potentiometer failure within the seat track assembly
30%
Damaged wiring harness or connector corrosion at the seat position sensor due to moisture or physical damage under the seat
20%
Broken or disconnected ground wire for the seat position sensor circuit
10%
Failed Body Control Module or internal circuit fault within the BCM
5%
Physical obstruction or mechanical binding preventing sensor operation or causing erratic readings
Diagnostic Steps
1
Step 1: Visually inspect the seat position sensor connector located under the driver or passenger seat for corrosion, moisture, pushed-out pins, or damage. Clean and repair connector as needed and check for proper seating.
2
Step 2: Using a digital multimeter, check for proper voltage supply to the seat position sensor (typically 5V reference). Verify ground circuit continuity by measuring resistance between sensor ground pin and chassis ground (should be less than 1 ohm).
3
Step 3: With ignition on and sensor connected, measure the sensor signal voltage while manually moving the seat forward and backward. Voltage should change smoothly between approximately 0.5V and 4.5V throughout the full range of motion without dropouts.
4
Step 4: If voltage readings are erratic or absent, disconnect the sensor and measure resistance across the sensor terminals while moving the seat. Resistance should change smoothly (typical range 500-5000 ohms depending on manufacturer). Replace sensor if resistance is infinite, zero, or erratic.
5
Step 5: Inspect the wiring harness under the seat for damage from seat track movement, pinching, or water intrusion. Perform continuity and insulation resistance tests on all circuits between the sensor connector and BCM connector.
6
Step 6: Clear the code, perform a seat calibration procedure if available in the scan tool, cycle the seat through full range of motion, and verify the code does not return. Monitor live data to confirm proper sensor operation.
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
DTC B2607 indicates the Body Control Module (BCM) has detected an abnormal voltage or signal from the seat position sensor circuit. This sensor monitors the position of the driver or passenger seat for memory functions, airbag calibration, and comfort features. The BCM has identified either an open ...
The most common cause of B2607 (Seat Position Sensor Circuit) is: Faulty seat position sensor or potentiometer failure within the seat track assembly
Typical repair costs for B2607 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This code does not affect vehicle safety or drivability and it is safe to continue driving. However, memory seat functions, airbag calibration, and automated seat adjustments may not function properly, which could affect occupant positioning and airbag deployment optimization.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B2607 to identify the root cause.
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Quick Info
Category
Body
System
Body Control and Comfort Systems
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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