P0572 2009 Ford Fusion Code - Brake Switch 'A' Circuit Low
Quick Answer
When the brake pedal is depressed, the stop light switch sends a signal to the Engine Control Module (ECM). Common causes include Faulty Brake Switch, Misadjusted brake switch, Brake Switch harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0572 2009 Ford Fusion indicates Brake Switch 'A' Circuit Low.
- Common causes
- Common causes include Faulty Brake Switch, Misadjusted brake switch, Brake Switch harness is open or shorted.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0572 2009 Ford Fusion Description
What are the Possible Causes of the DTC P0572 2009 Ford Fusion?
- Faulty Brake Switch
- Misadjusted brake switch
- Brake Switch harness is open or shorted
- Brake Switch circuit poor electrical connection
How to Fix the DTC P0572 2009 Ford Fusion?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0572 2009 Ford Fusion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0572 2009 Ford Fusion Code
1. What does OBDII code P0572 mean on a 2009 Ford Fusion?
P0572 indicates that the brake switch 'A' circuit is reading a voltage lower than the expected range, which can affect the brake light and cruise control systems.
2. What are the symptoms of code P0572 in a 2009 Ford Fusion?
Common symptoms include non-functioning brake lights, inability to engage cruise control, and the illumination of the check engine light.
3. What causes code P0572 in a 2009 Ford Fusion?
The most common causes are a faulty brake light switch, damaged wiring or connectors in the brake switch circuit, or a blown fuse.
4. Can code P0572 affect how the car drives?
While P0572 doesn’t typically affect drivability, it can disable the cruise control system and pose a safety risk if the brake lights stop working.
5. How do you diagnose code P0572 on a 2009 Ford Fusion?
Start by checking the brake lights and fuse, inspect the brake switch wiring and connectors for damage, and test the brake light switch for proper voltage and functionality.
6. Can I drive my 2009 Ford Fusion with a P0572 code?
It’s not recommended, as malfunctioning brake lights can pose a safety hazard and may make your car non-compliant with traffic laws.
7. How do you fix code P0572 in a 2009 Ford Fusion?
Repairs typically include replacing the brake light switch, repairing damaged wiring, or replacing a blown fuse in the brake light circuit.
8. How much does it cost to fix code P0572 on a 2009 Ford Fusion?
The cost varies but typically ranges from $50 to $150, depending on whether the brake light switch or wiring needs repair.
9. Can a bad brake light switch cause the P0572 code?
Yes, a faulty or stuck brake light switch is a common cause of the P0572 code.
10. Will clearing the P0572 code fix the problem?
Clearing the code without addressing the underlying issue will not fix the problem, and the code is likely to return.
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