Conditions for Running the DTC

P0556

• DTCs P0106, P0107, P0108, P0220, P0222, or P0223 are not set.
• The throttle position is less than 1 percent when the engine speed is less than or equal to 1,000 RPM.
• The brake booster pressure is increasing more than 0.3 KPa during 0.2 seconds.

P0557 or P0558

• The engine is running.
• This diagnostic runs continuously.

C1101

• The ignition is on or engine is running.
• The base brake pressure circuit high or low DTCs have not set.
• The transmission is in the drive position.
• The vehicle speed DTCs not present.

C1102 or C1103

• The ignition is on or engine is running.
• This diagnostic runs continuously.