UNIVERSAL · DTC LOOKUP
B0020 — Seat belt pretensioner deployed
Universal diagnostic code. Below: what it means, common causes, symptoms, and the exact bench-programming fix path.
Common causes
- •Pretensioner fired during collision
- •Pretensioner replaced but SRS not cleared
- •False-trigger event
Symptoms you'll see
- •Airbag light on
- •"Service required" or seat belt warning
The fix path
Airbag SRS Module Crash-Data Clear ($75).
AML services that fix this
Mail in the affected module, we bench-program, typically ship back next business day. Flat pricing, flat-rate return shipping at checkout.
Related diagnostic codes
B0028Airbag deployed — SRS module crash data storedB1004SRS Module Internal Failure / Crash Data StoredC0040ABS Module Internal FailureCluster mileage mismatchReplacement cluster shows wrong mileageRKE not respondingRemote keyless entry not working — module deadCrank-no-startEngine cranks normally but won't startNot sure which service applies?
Text us your year/make/model + which scanner caught the code — we'll tell you exactly which module to ship and which service to pick.