IBST_a022 — U5 V Test Fault
Full alert identifier: IBST_a022_U5VTestFault
Message shown in the car
Power braking assist reduced Braking may require increased effort
Alert description
iBooster (IBST) detected the U5V voltage comparator test has failed.
Potential impact
IBST may not operate as expected.
Set condition
IBST detects the U5V voltage comparator test has failed.
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_a022.