C1476 on Toyota Passo (KGC10): Brake Booster Pressure Sensor Circuit Low
Short answer: C1476 means “Brake Booster Pressure Sensor Circuit Low”. The car’s computer has found a fault in the Brake booster system. First check: not given in source.
- Code
- C1476
- System
- Brake booster
- Also sold as
- Daihatsu Boon, Daihatsu Sirion (M300)
- Applies to
- Unverified for 1st-gen Passo/Boon; Listed for 1KR-FE but systems (dual VVT, electronic throttle/pedal sensors, EGR, dual injectors, stop-start, brake booster sensor) belong to later 1KR-FE/1KR-FKE variants; LIKELY NOT applicable to 1st-gen Passo - uncertain
- Confidence
- low - NOT in Daihatsu M300 factory chart (B8-52..55); likely later-gen/Toyota-built 1KR only
- Source
- toyota-club.net
Symptoms and when it is set
- Not given in source
Likely causes
- Not given in source
What to check, in order
- Not given in source
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.

