P0571 Buick Code - Cruise Control Brake Switch Circuit
Quick Answer
The Engine Control Module (ECM) monitors the Brake Pedal Position Sensor. Common causes include Faulty Brake Pedal Position Sensor, Misadjusted Brake Pedal Position Sensor, Brake Pedal Position Sensor 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
- P0571 Buick indicates Cruise Control Brake Switch Circuit.
- Common causes
- Common causes include Faulty Brake Pedal Position Sensor, Misadjusted Brake Pedal Position Sensor, Brake Pedal Position Sensor 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 P0571 Buick Description
This diagnostic test functions on the assumption that a sudden decrease in vehicle speed is caused by a brake pedal application. When the ECM detects that there is a 4.2 km/h (2.6 mph) or greater decrease in vehicle speed within 0.25 seconds without a transition of the stop lamp switch, the ECM sets Diagnostic Trouble Code (DTC) P0571.
The DTC will be set when the BCM detects either a low voltage signal on the stop lamp switch signal circuit when the serial data message from the ECM indicates the brakes are applied or a high voltage signal on the stop lamp switch signal circuit when the serial data message from the ECM indicates the brakes are not applied.
What are the Possible Causes of the DTC P0571 Buick?
- Faulty Brake Pedal Position Sensor
- Misadjusted Brake Pedal Position Sensor
- Brake Pedal Position Sensor harness is open or shorted
- Brake Pedal Position Sensor circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC P0571 Buick?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0571 Buick 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.
Need more information about the P0571 Buick code?
Need more information on how to fix the P0571 Buick code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0571 Buick code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0571 Buick Code
1. What are common symptoms of OBDII code P0571 in a Buick related to the cruise control brake switch circuit?
The common symptoms include inoperative cruise control, illumination of the check engine light, and possibly issues with brake lights.
2. What are the possible causes of OBDII code P0571 in a Buick?
The code P0571 in a Buick typically indicates a malfunction in the cruise control brake switch circuit, which can be caused by a faulty brake switch, damaged wiring, or a poor connection.
3. How can I diagnose the cause of OBDII code P0571 in my Buick related to the cruise control brake switch circuit?
To diagnose the issue, you can start by checking the brake lights to see if they are functioning properly, inspecting the brake switch and its wiring for any damage, and testing the switch for continuity.
4. Can I still drive my Buick with OBDII code P0571 related to the cruise control brake switch circuit?
While it may be safe to drive your Buick with this code, it is recommended to address the issue promptly to avoid potential safety hazards and to prevent further damage to the vehicle.
5. Is it possible to repair OBDII code P0571 in a Buick related to the cruise control brake switch circuit myself?
Depending on your level of automotive knowledge and skills, you may be able to address this issue yourself by replacing the brake switch or repairing any damaged wiring. However, if you are unsure, it is best to seek professional help.
6. What are some tips for repairing OBDII code P0571 in a Buick related to the cruise control brake switch circuit?
Ensure that you have the correct replacement part, follow the manufacturer's instructions for installation, and double-check all connections to ensure proper functionality.
7. Can a faulty cruise control brake switch impact other systems in my Buick?
While the primary impact of a faulty cruise control brake switch is on the cruise control system, it can also affect the brake lights and potentially trigger the check engine light.
8. How much does it typically cost to repair OBDII code P0571 in a Buick related to the cruise control brake switch circuit?
The cost of repairing this code can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose to DIY or seek professional help. It is advisable to obtain quotes from local mechanics or repair shops for an accurate estimate.
9. Are there any preventive measures I can take to avoid OBDII code P0571 in my Buick related to the cruise control brake switch circuit in the future?
Regularly inspecting the brake switch and its wiring for signs of wear or damage, and addressing any issues promptly can help prevent the recurrence of this code in the future.
10. How long does it typically take to repair OBDII code P0571 in a Buick related to the cruise control brake switch circuit?
The repair time can vary depending on the exact cause of the issue, the availability of parts, and whether you are doing the repair yourself or taking it to a professional. In general, this repair can take anywhere from 30 minutes to a few hours.
Discuss the causes and fixes for P0571 Buick OBDII Code
Code P0571 Buick comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
