The most obvious sign is the illuminated "SRS" or "Airbag" light on the dashboard [2, 3].
A technician will often start by inspecting yellow SRS connectors for damage or loose CPA clips, often following technical service bulletins like TSB #08-09-41-002H [16, 20]. The most obvious sign is the illuminated "SRS"
In many cases, the computer will disable the entire airbag system as a precaution when this code is active [6, 7]. Typical Causes Typical Causes A seat belt pretensioner is a
A seat belt pretensioner is a pyrotechnic device that uses a small explosive charge to instantly tighten the seat belt during a collision [6, 18]. The , or airbag computer, monitors this circuit’s electrical resistance. If the resistance falls outside the normal range (typically 1.1 to 3.9 ohms ), the SDM triggers B0022 and illuminates the airbag warning light [2, 18]. Common Symptoms 18]. What is Code B0022?
Because SRS systems contain explosive components, specialized diagnostic tools are required to test the circuit safely without accidental deployment [2, 6].
While the exact definition can vary slightly by manufacturer, for most vehicles (Chevrolet, GMC, Cadillac, Buick), B0022 specifically identifies a fault in the Right Front (Passenger) Seat Belt Retractor Pretensioner Deployment Loop [13, 21].
Code is a safety-critical diagnostic trouble code (DTC) that indicates a fault within your vehicle's Supplemental Restraint System (SRS) —commonly referred to as the airbag system [2, 16]. This code typically points to a malfunction in the deployment loop for a specific safety component, often the passenger seat belt pretensioner [2, 18]. What is Code B0022?