P1578
Brake Booster Vacuum Sensor Circuit Low Vacuum
P1578 is an OBD-II diagnostic trouble code meaning: Brake Booster Vacuum Sensor Circuit Low Vacuum. Common causes: brake booster vacuum sensor malfunction, vacuum leak in the brake booster system. Estimated repair cost: $17–56.
Symptoms
- Increased brake pedal force
- Deterioration in braking performance
- Check Engine Light Is On
- Unstable engine operation at idle
- Noises when operating the brake booster
Causes
- Brake booster vacuum sensor malfunction
- Vacuum leak in the brake booster system
- Open or short circuit in the sensor circuit
- Vacuum pump malfunction
- Problems with the sensor wiring harness
How to Fix
- Check the continuity of the brake booster vacuum sensor circuit
- Check for vacuum leaks in the system
- Test the brake booster vacuum sensor
- Replace the vacuum sensor if necessary
- Check and, if necessary, replace the vacuum pump
Related codes
Error P1578 by Vehicle Brand
FAQ
What does the P1578 code mean?
P1578 is an OBD-II diagnostic trouble code that indicates: Brake Booster Vacuum Sensor Circuit Low Vacuum
What causes a P1578 error code?
The most common causes of P1578 include: Brake booster vacuum sensor malfunction; Vacuum leak in the brake booster system; Open or short circuit in the sensor circuit; Vacuum pump malfunction.
How do I fix a P1578 diagnostic trouble code?
To fix P1578: Check the continuity of the brake booster vacuum sensor circuit. Check for vacuum leaks in the system. Test the brake booster vacuum sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1578?
Limited driving only, diagnose soon
How much does it cost to fix P1578?
The estimated repair cost for P1578 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat