Powertrain
Generic/SAE
OBD-II Fault Code
P0572: Cruise Control/Brake Switch A Circuit Low
Meaning, symptoms, likely causes, diagnostic checks and repair guidance for P0572.
ABS / brake system
Use this category to narrow your checks before replacing parts.
High
Severity is a general guide. Confirm with scan-tool data and vehicle symptoms.
What P0572 usually means
Cruise Control/Brake Switch A Circuit Low.
Common symptoms
Check Engine light; Poor drivability or reduced fuel economy depending on fault; ABS/traction light, ABS disabled, possible speedometer or stability-control issues
Likely causes
Dirty/damaged wheel speed sensor; Damaged tone ring/bearing; Wiring fault; ABS pump/module issue; Low signal voltage; Weak power supply; High resistance/poor ground; Failed sensor
Diagnostic checks
Scan all modules and record freeze-frame data before clearing codes; Check battery voltage and related fuses; Inspect wheel speed sensor wiring and tone ring; Compare live wheel speed data while spinning wheels safely; Check sensor reference voltage, ground and signal voltage
Repair guidance
Repair sensor wiring or replace failed sensor/bearing/tone ring; Diagnose pump/module only after sensor circuits pass; Repair poor ground/power feed or replace confirmed faulty sensor
Verification after repair
Clear code, road-test through the same drive condition, then rescan