B1157 (blink 15) on Toyota Corolla E120: Front Airbag Sensor (RH) Malfunction
Short answer: B1157 means “Front Airbag Sensor (RH) Malfunction”. The car’s computer has found a fault in the SRS system and turns on the SRS airbag warning. First check: front airbag sensor (RH); Airbag sensor assembly; Wire harness; Engine room main wire harness.
- Code
- B1157 · blink 15
- System
- SRS
- Dashboard light
- SRS airbag warning
- Applies to
- Cars with airbags (SRS)
- Confidence
- high (official Toyota RM821E)
- Source
- toyotamanuals.gitlab.io
Symptoms and when it is set
- /B1157/15 S Front airbag sensor (RH) malfunction
Likely causes
- Front airbag sensor (RH); Airbag sensor assembly; Wire harness; Engine room main wire harness
Related on this car
Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.

