Brake booster pressure sensor, installing on the brake booster, detects negative brake booster pressure in order to prevent abnormal braking from lack of negative pressure in brake booster.
In case that negative pressure lacks at idle start status, ECM release idle stop function(Engine start) in order to make proper negative pressure. If this DTC is set, No more idle stop functioning.
If sensor signal input is higher than 4.8V during 0.2 sec, ECM sets DTC P0558.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Signal check, high |
•
Poor connection
•
Open or short to power in signal circuit
•
Open in ground circuit
•
BVS |
Enable Conditions |
•
Engine ON | |
Threshold Value |
•
Sensor voltage > 4.8V | |
Diagnostic Time |
•
0.2 sec | |
MIL ON Condition |
•
DTC only |
