Conditions for Setting the DTC
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
P0556
- The throttle is closed and the pressure difference between the engine manifold vaccuum, and brake booster vacuum is higher than threshold 6 KPa.
- The brake booster pressure sensor detects a leak in the brake booster system.
P0557 or P0558
- The DTC will set when a brake booster pressure sensor or signal circuit is out of range low.
- The DTC will set when a brake booster pressure sensor or signal circuit is out of range High.
C1101
- The engine is running.
- This diagnostic runs continuously.
C1102 or C1103
- The engine is running.
- This diagnostic runs continuously.