Powertrain
Definition only
Lights the check engine lamp
P2BA0: Coolant Pump C Underspeed
Standardized SAE J2012 code · P2Bxx codes
What does P2BA0 mean?
Coolant pump C reports a underspeed condition. Coolant circulation through the affected loop cannot be commanded reliably.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Mechanical load increased (binding)
- Medium Supply voltage low under load
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2BA0 on the same make and model first.
P2BA0 in the community
Ask about P2BA0No one has posted about P2BA0 yet
Share your vehicle, the tool you used and what you tested — the first thread helps everyone who searches for this code.
Describe your P2BA0 problem