OBD-II code · Chassis
C0300 Inlet Valve Front Left Performance
The front left inlet solenoid valve does not respond hydraulically as expected during ABS self-test.
Is it safe to drive with C0300?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyValve stuck due to brake fluid debris
- PossibleCoil resistance drift
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–5 h
- Emissions test
- Usually unaffected
- Parts involved
- ABS Solenoid Valve Fl, ABS Hydraulic Block
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.