P2B64: The coolant pump B control unit is getting too hot
The coolant pump B control unit is getting too hot. It may be poor cooling, very demanding use or the part itself.
| Code | P2B64 |
|---|---|
| System | Engine and transmission |
| Group | P2Bxx, Engine and emissions |
| Type | Generic: it means the same on every make |
How to read and clear P2B64 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P2B64 with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- P2B5F The engine coolant flow control valve position sensor gives a higher signal
- P2B60 The engine coolant flow control valve position sensor gives readings outside
- P2B61 The engine coolant flow control valve has got stuck
- P2B62 The coolant pump B power supply voltage has an electrical fault
- P2B66 The coolant pump D control has a broken or disconnected wire
- P2B67 The coolant pump D control gives a lower signal than normal
- P2B68 The coolant pump D control gives a higher signal than normal
- P2B69 The coolant pump D power supply voltage has an electrical fault
- P2BAC NOx exceedance: EGR deactivated
What does code P2B64 mean?
The coolant pump B control unit is getting too hot. It may be poor cooling, very demanding use or the part itself.
How do you clear P2B64?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P2B64 comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
