P2E41 code meaning
Hybrid/EV Electronics Coolant Pump B Control Circuit/Open
Powertrain system Generic code P2Exx codes Check engine light
What P2E41 means
P2E41 flags an electrical fault on the line over which the controller commands electronics coolant pump B, the second pump serving inverter, DC/DC converter and frequently the charger; the maker decides which pump is B. No manufacturer publicly documents P2E41. GM's 2018 hybrid tables show the logic for the pump A counterpart P0CE9: the controller watches the current on the PWM command line and fails it below 200 mA or above 3 A while active, after 16 failures in 20 samples taken every 250 ms, Type B. Ford's 2024 summary checks the command line of its auxiliary pump B for an open circuit (fault type 13) within 5 s at 11 V or more. Broken wires, corroded pins and pumps with dead input electronics are typical. Audi logged pump A's circuit code on the e-tron alongside low coolant. Low and High are P2E43 and P2E44.
P2E41 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 P2E41
- Hybrid or electric drive warning and MIL
- Pump B does not run, electronics loop warms up faster
- Reduced drive power or interrupted charging under high load
Common causes of P2E41
- Most likelyBroken or disconnected control wire between module and pump B
- PossibleCorroded or pushed-back pins at the pump connector
- PossiblePump B electronics no longer load the command line
- Less likelyFaulty output stage in the controlling module
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 bPower electronics coolant loop
What each part of P2E41 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 41 | The exact fault in that area. |
What to do next
- Note P2E41 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 P2E41
What does P2E41 mean?
P2E41 means "Hybrid/EV Electronics Coolant Pump B Control Circuit/Open". P2E41 flags an electrical fault on the line over which the controller commands electronics coolant pump B, the second pump serving inverter, DC/DC converter and frequently the charger; the maker decides which pump is B. It is a generic code, so it means the same on every make.
Is it safe to drive with P2E41?
Drive gently and only to a workshop. With P2E41 the car can go into limp mode (reduced power) to protect itself.
Will P2E41 fail an emissions test?
Yes, it can. P2E41 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 P2E41 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P2E41 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.