B0020 on Honda Accord
Left Side Airbag Deployment Control
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Honda Accord context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for B0020.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What B0020 Means on Your Honda Accord
B0020 is a diagnostic trouble code indicating: Left Side Airbag Deployment Control. This code relates to the body electrical system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real Honda Accord Owner Reports
Source: NHTSA Complaints Database
"About two months ago, SRS/Supplmental Restrain light came on. It has been coming on/off. Took to the dealership to check; however at that time the light was off-they did not find anything wrong. ON 9/5/24, the light came on again, took to the dealership same day. They diagnosed as code B0020-13."
"My Honda Accord car has warning sign came multiple times . SRS -Airbag LF side impact . B0020-13 Honda dealer has suggested to replace Left side airbag module . I have contacted Honda but he has denied for any recall or repair cost. Vehicle mileage is around 26K and 2019 year model accord."
"On December 26, 2025, the supplemental restraint system problem appeared on the dashboard. On January 6, 2026, vehicle was taken to Stockton Honda service department to performed a diagnostic test and multi-point inspection was completed."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Honda Accord
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.