P1577 Code - Brake Booster Vacuum Sensor Circuit Low Input
Quick Answer
The diagnostic trouble code P1577 indicates a problem with the brake booster vacuum sensor circuit, specifically a low input signal. Common causes include Faulty brake booster vacuum sensor, Damaged or corroded wiring in the sensor circuit, Vacuum leak in the brake booster system. 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
- P1577 indicates Brake Booster Vacuum Sensor Circuit Low Input.
- Common causes
- Common causes include Faulty brake booster vacuum sensor, Damaged or corroded wiring in the sensor circuit, Vacuum leak in the brake booster system.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1577 Description
The diagnostic trouble code P1577 indicates a problem with the brake booster vacuum sensor circuit, specifically a low input signal. The brake booster vacuum sensor is a crucial component of the vehicle's braking system, responsible for detecting the amount of vacuum pressure in the brake booster. The brake booster is essential for ensuring proper brake pedal feel and assisting in applying the brakes effectively.
Common Causes of P1577
- Faulty brake booster vacuum sensor
- Damaged or corroded wiring in the sensor circuit
- Vacuum leak in the brake booster system
- Malfunctioning brake booster
- Electronic control module (ECM) issues
Symptoms of P1577
- Illuminated brake warning light on the dashboard
- Soft or spongy brake pedal feel
- Increased brake pedal effort required to stop the vehicle
- Decreased braking performance, longer stopping distances
- ABS system may be disabled or malfunctioning
How to Fix P1577
- Perform a visual inspection of the brake booster vacuum sensor and its wiring. Look for any visible damage or corrosion.
- Test the brake booster vacuum sensor using a multimeter to check for proper voltage signals. Replace the sensor if it is faulty.
- Check for any vacuum leaks in the brake booster system and repair as necessary.
- Inspect the brake booster for any signs of damage or malfunction. Replace the brake booster if needed.
- Clear the diagnostic trouble codes from the vehicle's ECM using a scan tool and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1577
The cost of repairing a brake booster vacuum sensor circuit low input issue can vary depending on the specific cause of the problem and the vehicle's make and model. On average, the parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Additional diagnostic fees may apply, and it's important to consider the rates of local auto repair shops when estimating the total cost.
Need more information about the P1577 code?
Need more information on how to fix the P1577 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1577 code diagnosed by a professional: Find a repair shop in your area
Code P1577 Information for Specific Makes
- P1577 Audi — Engine Mounting Control Solenoid Bank 1 Open Circuit
- P1577 Buick — Brake Booster Vacuum Sensor Circuit Low Input
- P1577 Cadillac — Brake Booster Vacuum Sensor Circuit Low Input
- P1577 Chevrolet — Brake Booster Vacuum Sensor Circuit Low Input
- P1577 Ford — Pedal Position Sensor Disagreement
- P1577 GMC — Brake Booster Vacuum Sensor Circuit Low Input
- P1577 Honda — High Voltage Detection Signal Circuit Problem
- P1577 Saab — Brake Pedal Position Switch Short To Ground
- P1577 Volkswagen — Engine Mounting Control Solenoid Bank 1 Open Circuit
Frequently Asked Questions about P1577 Code
No Frequently Asked Questions about P1577 Code found.
Discuss the causes and fixes for P1577 OBDII Code
Code P1577 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.