What are the common causes of B0070?

Open or short in the driver seat belt pretensioner A squib circuit. A corroded connector at the driver pretensioner A. A failed driver seat belt pretensioner A. A blown fuse or poor ground in the driver pretensioner circuit.

Read the SRS codes and note every pretensioner fault. Inspect the driver pretensioner A connector for corrosion. Test the driver pretensioner A squib circuit for opens and shorts. Check the pretensioner fuse and ground for the driver circuit. Replace the driver seat belt pretensioner A if the circuit is sound. Clear the code and retest.

B0070

Driver Seat Belt Pretensioner A Deployment Control

System: Body control (B code)
Lamp: Airbag Light
Category: Body

What it means

B0070 means Driver Seat Belt Pretensioner A Deployment Control.

Check these first

Open or short in the driver seat belt pretensioner A squib circuit
A corroded connector at the driver pretensioner A
A failed driver seat belt pretensioner A
A blown fuse or poor ground in the driver pretensioner circuit

What to do next

Read the SRS codes and note every pretensioner fault
Inspect the driver pretensioner A connector for corrosion
Test the driver pretensioner A squib circuit for opens and shorts
Check the pretensioner fuse and ground for the driver circuit
Replace the driver seat belt pretensioner A if the circuit is sound
Clear the code and retest

Look up another code

Code or symptom

Enter a full code or a symptom. Press / to search. How to read a code

Type a code above, or start from a symptom or a common code.

Updated

Generic SAE J2012 definition. Last updated 2026-10-10.