Jeep
Brake vacuum pump control circuit performance (Cherokee, JL Wrangler, Gladiator). ESC light on; check pump wiring and hoses with P258B.
C1252 fault code: what it means
C1252: Brake vacuum pump control circuit performance (Cherokee, JL Wrangler, Gladiator). ESC light on; check pump wiring and hoses with P258B.
Usual causes, most likely first
- electric vacuum pump
- pump wiring/connector
- vacuum hose leak
- software
C1252 by make
Lexus
Brake booster pump motor ran too long on Lexus hybrids with electronic brakes: accumulator pressure will not build. Usually a failing brake actuator.
Toyota
Hybrid brake booster pump motor ran too long: the electric brake pump keeps running because accumulator pressure will not build. The brake actuator is usually failing.
What the repair usually costs
- ABS / brake booster actuator replacement (Toyota hybrid)NZ$1,280–NZ$3,430 · A$1,140–A$3,090
- Brake fluid flush and bleedNZ$90–NZ$180 · A$90–A$190
- Brake fluid flush with ABS scan-tool bleed (European / performance)NZ$150–NZ$310 · A$150–A$310
Not sure what C1252 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.