why is my airbag light on after getting my car washed

Hello, it's funny you checked under the seats - that was my initial thought and go to guess. An interior detail can involve folks who disturb harness wiring connectors by jamming vacuum nozzles under the seats. "No code is being found" - your code reader probably does not detect "Body" B codes, which would be what air bag codes would register as. An air bag light that stays on is definitely telling you a fault was found and has shut off the restraint system to prevent injury or damage further. Hands on testing is needed, no more guesses I can imagine here. https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.