B0019 code meaning
Center Frontal Stage 2 Deployment Control
What B0019 means
B0019 is the stage 2 member of the first-row center frontal series B0018 to B001A, meant for the second inflator charge of a middle-seat frontal airbag. No carmaker publicly documents the code with this meaning. General Motors uses B0019 widely, but for stage 1 of the passenger airbag in the instrument panel: on the Saab 9-4X 2011 sub-codes 01 and 02 mark shorts, 04 an open, 0D a loop reading that stays high and 0E one that stays low, while stage 2 of that bag is B0020. On the 2009-10 Chevrolet HHR, fretting corrosion in the in-line connector between body and dash harness raised loop resistance and set B0019 0D or 04 (PI0117B and a customer satisfaction program). On GM vehicles the passenger airbag therefore needs checking first. The airbag lamp is on.
B0019 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B0019
- Airbag warning lamp on
- On GM the passenger frontal airbag stage 1 may not deploy
- Safety note: do not probe the airbag circuit yourself; unplug airbag connectors only with the battery disconnected and the stated wait time observed
Common causes of B0019
- Most likelyOn GM vehicles fretting corrosion in the passenger airbag in-line connector (HHR PI0117B)
- Less likelyFault in the stage 2 loop of a first-row center frontal airbag (J2012 meaning)
- Less likelyInternal fault in the airbag module on this loop
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Center frontal airbagPassenger airbag moduleSquib circuitSRS control module
What each part of B0019 means
| B | Body system: airbags, seat belts, power seats, lights and climate control. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 19 | The exact fault in that area. |
What to do next
- Note B0019 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about B0019
What does B0019 mean?
B0019 means "Center Frontal Stage 2 Deployment Control". B0019 is the stage 2 member of the first-row center frontal series B0018 to B001A, meant for the second inflator charge of a middle-seat frontal airbag. It is a generic code, so it means the same on every make.
Is it safe to drive with B0019?
B0019 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B0019 fail an emissions test?
B0019 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is B0019 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will B0019 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.