If brake booster vacuum pressure sensor output signal is below minimum threshold value(200mV)., ECM sets DTC P0557.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Signal monitoring | 1. Poor connector connection 2. Short to ground in signal circuit of brake booster vacuum sensor 3. Faulty brake booster vacuum sensor |
Enable Condition |
•
Engine "ON" | |
Threshold Value |
•
Sensor voltage is lower than 0.2V | |
Diagnosis Time |
•
0.2 sec. | |
MIL ON Condition |
•
- |
