P2B85: The engine coolant pump is turning slower than it should
The engine coolant pump is turning slower than it should. It may be the part itself, its connector or the wiring.
| Code | P2B85 |
|---|---|
| System | Engine and transmission |
| Group | P2Bxx, Engine and emissions |
| Type | Generic: it means the same on every make |
How to read and clear P2B85 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 P2B85 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
- P2B7E The evaporative emission system pressure sensor C fails now and then
- P2B81 The wastegate position sensor A gives readings outside the normal range
- P2B82 The wastegate position sensor B gives readings outside the normal range
- P2B84 The intercooler coolant pump is turning slower than it should
- P2B87 The coolant pump A is turning slower than it should
- P2B88 The intake air lambda sensor (bank 1) has an electrical fault
- P2B89 The intake air lambda sensor (bank 1) gives a lower signal than normal
- P2B8A The intake air lambda sensor (bank 1) gives a higher signal than normal
- P2BAC NOx exceedance: EGR deactivated
What does code P2B85 mean?
The engine coolant pump is turning slower than it should. It may be the part itself, its connector or the wiring.
How do you clear P2B85?
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, P2B85 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.
