P0573 moderate

Cruise Control/Brake Switch A Circuit High

The P0573 code means the vehicle's onboard diagnostic system has detected: Cruise Control/Brake Switch A Circuit High. This is a moderate severity code.

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Keep driving?: Short distances only
DIY difficulty: moderate
Estimated cost: $50 - $400 (parts and labor)

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Common Symptoms

Check Engine Light on
Cruise control does not disengage when braking
Cruise control indicator malfunction
Cruise control system inoperative

Probable Causes (Ranked by Likelihood)

Brake switch circuit shorted to power Very High
Damaged clockspring or steering column wiring High
Corroded connector in cruise control circuit Moderate
ECM or cruise control module input failure Low

Step-by-Step Diagnostic Procedure

Use a scan tool to monitor cruise control input signals while operating each switch
Inspect cruise control switch and clockspring connections for damage or wear
Test the specific circuit for proper voltage and continuity related to the cruise control/brake switch a circuit high
Check all cruise control fuses and relay connections

Frequently Asked Questions

What does P0573 mean?

P0573 indicates a malfunction in the cruise control/brake switch a circuit high. The ECM has detected an abnormal signal in this portion of the cruise control system, preventing proper operation of that function.

Can I still drive safely with this code?

Yes, though brake-related cruise control codes should be addressed promptly for safety. The cruise control system is a convenience feature and this code does not affect engine performance.

Is this a common cruise control problem?

Cruise control switch and wiring issues are relatively common, especially on vehicles with high mileage. The steering column clockspring and switch contacts wear over time from normal use.