B0052

Passenger Seat Belt Sensor

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Airbag light is on
The security system does not detect whether the passenger is wearing a seat belt.
Error B0052 is stored in the ECU memory

Causes

Seat belt sensor malfunction
Broken or damaged wiring harness
Contact corrosion
Software failure in the control unit

How to Fix

Check the integrity of the wiring harness to the sensor
Inspect the sensor contacts for corrosion
Check sensor resistance (compare with nominal value)
If necessary, replace the seat belt sensor
Reset the error using an OBD-II scanner

Related codes

B0050 B0051 B0053