B0052
Deployment Commanded — Crash Data Stored
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Code B0052 indicates that the airbag control module commanded deployment of restraint devices during a collision and has stored crash data in its permanent memory. This is a latched code that cannot be cleared with any diagnostic scan tool. The crash data includes information such as impact severity, vehicle speed at impact, deceleration forces, and which restraint devices were commanded to deploy.
This code confirms that the vehicle was involved in a crash significant enough to trigger airbag deployment. The airbag control module is now in a permanent fault state and must be replaced — it cannot be reset, reprogrammed, or reused. All deployed devices (airbags, pretensioners) and impact sensors must also be replaced per the manufacturer's service procedures before the SRS system will function again.
This code is particularly important during used vehicle inspections. If B0052 appears on a pre-purchase scan, it provides objective evidence that the vehicle was in a significant collision. Even if the body damage has been repaired, this code reveals the crash history. Buyers should verify that all SRS components were properly replaced with OEM parts and that the vehicle underwent a proper structural repair. Some third-party services offer airbag module 'reset' services, but using a reset module that still contains crash data is dangerous and potentially illegal in many jurisdictions.
Severity
Symptoms
- •Airbag warning light permanently illuminated
- •One or more airbags have deployed or seatbelt pretensioners have fired
- •Visible collision damage to the vehicle
- •SRS system is completely non-functional for any future crash events
- •Seatbelts may not retract properly if pretensioners have fired
Likely Causes
The airbag control module deployed restraint devices during a crash and recorded the crash event data (impact speed, deceleration forces, deployment timing) into its non-volatile memory. This data is permanently stored and cannot be erased.
In some cases, a vehicle may have been in a collision where airbags deployed but the damage was cosmetically repaired without replacing the airbag control module. The stored crash data remains, and this code will persist.
Extremely rare — a hardware or firmware defect in the airbag control module could theoretically create a false crash record, but modern safety systems have extensive safeguards against this.
Estimated Cost
Professional Repair
Includes parts + labor
Common Fixes
- Replace the airbag control module (crash data cannot be erased)
- Replace all deployed airbag modules and fired pretensioners
- Replace all impact sensors per manufacturer requirements
- Have a complete SRS system inspection performed after replacement
- Verify SRS system functionality with a full diagnostic scan