PCS2REXB_a149 — Buck Boost Fault
Full alert identifier: PCS2REXB_a149_buckBoostFault
Alert description
The Power Conversion System (PCS) is unable to regulate internal voltage rails.
Potential impact
DCDC conversion, AC charging, and outlets may be unavailable.
Set condition
The buck-boost converter did not reach the desired voltage.
Clear condition
The buck-boost converter voltage reaches the desired voltage.
Signals to check
These diagnostic fields are associated with PCS2REXB_a149. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Buck Boost 18 V 0 Rail
PCS2REXB_
|
V |
Buck Boost 18 VOV Cmpss Fault
PCS2REXB_
|
— |
Buck Boost 18 VUV Cmpss Fault
PCS2REXB_
|
— |
Buck Boost Cmpss Fault Count
PCS2REXB_
|
— |
Buck Boost LVOV Cmpss Fault
PCS2REXB_
|
— |
Buck Boost LVUV Cmpss Fault
PCS2REXB_
|
— |
Buck Boost Permanent Fault
PCS2REXB_
|
— |
Buck Boost Ramp Fault Count
PCS2REXB_
|
— |
Show 2 more fields
| Signal | Unit |
|---|---|
Buck Boost Ramp Target
PCS2REXB_
|
V |
Buck Boost Retry Prevented Fault
PCS2REXB_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of PCS2REXB_a149.