The control module detected that the Hybrid/EV Battery Pack Coolant Control Valve B Control Circuit Driver Current/Temperature value was above the expected limit.
TuningBot DTC Database · v4.37.14
P0E21 Hybrid/EV Battery Pack Coolant Control Valve B Control Circuit Driver Current/Temperature Too High
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P0E21 means
Related and nearby codes
How to read P0E21
Powertrain: engine, transmission and driveline systems.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about P0E21
What does P0E21 mean?
Hybrid/EV Battery Pack Coolant Control Valve B Control Circuit Driver Current/Temperature Too High. The control module detected that the Hybrid/EV Battery Pack Coolant Control Valve B Control Circuit Driver Current/Temperature value was above the expected limit.
Is P0E21 generic or manufacturer-specific?
P0E21 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P0E21 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
