P0573

Brake Switch A Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–56 (est.)

Symptoms

Cruise control doesn't work
Brake lights stay on or don't work
Problems starting the engine (on some models)
Check Engine light comes on

Causes

Faulty brake light switch
Short circuit in the circuit
Damaged wiring harness
Grounding problems
Engine control unit (ECU) malfunction

How to Fix

Check the operation of the brake light switch
Inspect the wiring harness for damage
Check continuity with a multimeter
Replace the brake light switch if necessary
Check and restore circuit grounding
Scan the system for other errors

Related codes

P0571 P0572 P0574