C1197 fault code: what it means

C1197: Brake booster vacuum sensor fault. Brake assist and related functions may be disabled; check for vacuum leaks.

Chassis (brakes, steering, suspension) · Costly if missed

Usual causes, most likely first

1. vacuum sensor on brake booster
2. vacuum hose leak or blockage
3. wiring fault
4. ABS unit

C1197 by make

What the repair usually costs

• ABS / brake booster actuator replacement (Toyota hybrid)NZ$1,280–NZ$3,430 · A$1,140–A$3,090
• Parking sensor replace, one sensorNZ$130–NZ$520 · A$130–A$510

Not sure what C1197 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.