P2C67 code meaning
Hybrid/EV Electronics Coolant Pump A Overspeed
Powertrain system Generic code P2Cxx codes Check engine light
What P2C67 means
With P2C67 the electronics coolant pump A runs faster than commanded. A centrifugal pump speeds up as soon as it loses load, so air in the loop is the leading suspect, followed by a loose impeller or a faulty speed signal. Mercedes logs the related dry-run code P2B2A7A on the GLE/GLS 167 with M177 V8 and 48 V system: air in the low-temperature loop sends the 15 W pump into an emergency dry-run mode, and the cluster shows a yellow coolant message. A Pierburg patent detects dry running by letting the motor coast after a defined energy pulse and counting rotor turns. No manufacturer documents P2C67 itself. Ford's 2024 summary treats overspeed/dry run (B1) as its own pump fault type. Underspeed is P2C66, dry run P2B2A.
P2C67 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 P2C67
- Coolant or drive system warning in the cluster
- Churning or gurgling noise from the pump
- Reduced power when electronics temperatures climb
Common causes of P2C67
- Most likelyAir in the electronics loop after service or from a leak
- PossibleLow coolant level in the low-temperature reservoir
- Less likelyImpeller slipping on the shaft or broken
- Less likelyImplausible speed feedback from the pump electronics
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hybrid electronics coolant pump aPower electronics coolant loop
What each part of P2C67 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| C | Area: hybrid propulsion. |
| 67 | The exact fault in that area. |
What to do next
- Note P2C67 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 P2C67
What does P2C67 mean?
P2C67 means "Hybrid/EV Electronics Coolant Pump A Overspeed". With P2C67 the electronics coolant pump A runs faster than commanded. It is a generic code, so it means the same on every make.
Is it safe to drive with P2C67?
Drive gently and only to a workshop. With P2C67 the car can go into limp mode (reduced power) to protect itself.
Will P2C67 fail an emissions test?
Yes, it can. P2C67 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 P2C67 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P2C67 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.