P2B62 code meaning
Coolant Pump B Supply Voltage Circuit
Powertrain system Generic code P2Bxx codes Check engine light
What P2B62 means
P2B62 flags a supply voltage problem at coolant pump B, an electrically driven auxiliary pump with its own electronics. Ford's 2024 gasoline OBD summary files it as failure type 1C (supply voltage outside its permitted band) under base code P261A, in the check of pump B, which Ford defines as the high-temperature-loop auxiliary pump for component cooling #1. The check runs continuously, needs at least 11 V battery voltage and has a monitoring time of 5 seconds. Typical triggers are a blown fuse, a weak relay, corroded power or ground pins or a discharged battery. Faults on the control line are reported separately by P261A to P261D, the same supply fault on pump D by P2B69. With insufficient voltage the pump slows or stops, and the component it cools may overheat.
P2B62 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2B62
- Warning lamp with stored code
- Auxiliary pump runs slowly or not at all
- Rising temperature of the component cooled by pump B
Common causes of P2B62
- Most likelyPump fuse blown or supply relay not closing properly
- PossibleCorroded or loose power or ground connection at the pump
- PossibleWeak battery or charging system fault lowering supply voltage
- Less likelyVoltage detection inside the pump electronics faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Coolant pump bWiring harnessECM
What each part of P2B62 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| B | Area: hybrid propulsion. |
| 62 | The exact fault in that area. |
What to do next
- Note P2B62 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2B62
What does P2B62 mean?
P2B62 means "Coolant Pump B Supply Voltage Circuit". P2B62 flags a supply voltage problem at coolant pump B, an electrically driven auxiliary pump with its own electronics. It is a generic code, so it means the same on every make.
Is it safe to drive with P2B62?
Drive gently and only to a workshop. With P2B62 the car can go into limp mode (reduced power) to protect itself.
Will P2B62 fail an emissions test?
Yes, it can. P2B62 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2B62 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P2B62 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.