C0066high severityChassis
ABS Pressure Circuit Malfunction
on 2015 Kia Forte 1.8L I4 · FWD
What this code means
General fault in the ABS hydraulic pressure sensing or regulation circuit.
Symptoms
- ABS light on
- Stability control disabled
- Brake pedal feel abnormal
- ABS may activate unexpectedly
Common causes
- Faulty ABS pressure sensor
- Hydraulic unit internal leak
- Pressure transducer failure
- Wiring to pressure sensor damaged
Diagnostic steps
- Read ABS pressure sensor values with scan tool
- Compare commanded versus actual pressure
- Inspect pressure sensor wiring
- Check for brake fluid leaks at ABS unit
- Test pressure transducer
Repair notes
Replace ABS pressure sensor or hydraulic unit as needed.
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