P1578 OBD Trouble Code

1 result found

P1578 - GM
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Brake Booster Vacuum Sensor Circuit Low Vacuum

Cause

No PCM or TCM codes set, engine speed at 500 rpm or more for 20 seconds, brakes not applied, BARO input at 72 kPa or more, MAP input at 60 kPa or less, then the PCM detected a Brake Booster Vacuum input of 5 kPa or less for 16 seconds

Try also: https://www.obd-codes.com/p1578