B0072

Passenger Seat Belt Pretensioner A Deployment Control

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Airbag light is on
Seat belt does not tighten when braking hard
Error B0072 in the diagnostic scanner memory

Causes

Open or short circuit in the pretensioner circuit
Malfunction of the pretensioner itself
Problems with the airbag control module
Wiring harness damage
Contact corrosion

How to Fix

Carry out diagnostics using an OBD-II scanner
Check the integrity of the pretensioner chain
Inspect contacts and connectors for corrosion
Check pretensioner resistance
If necessary, replace the pretensioner or wiring harness.
Reset the error and check the system operation

Related codes

B0070 B0071 B0073