IBST_a027 — Ecu Fast Wd Test Fault
Full alert identifier: IBST_a027_ecuFastWdTestFault
Message shown in the car
Power braking assist reduced Braking may require increased effort
Alert description
iBooster (IBST) detected a missing Built-In Self-Test (BIST) trigger did not electrically switch off as expected.
Potential impact
IBST may not operate as expected.
Set condition
IBST detects BIST trigger did not switch off as expected.
Clear condition
iBooster can not recover from this condition. iBooster replacement may be required.
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of IBST_a027.