P0E4E code meaning
Engine Failed to Crank
What P0E4E means
P0E4E reports that the hybrid system commanded an engine start but the crankshaft did not turn, or did not reach the cranking speed it expected. It differs from P0A0F, where the engine is turned over but does not fire and keep running. In most hybrids a motor-generator fed by the high-voltage battery cranks the engine, so causes range from a seized engine or transaxle to missing battery energy or a drive fault. No manufacturer documents P0E4E publicly. GM's bulletin PIC6229C for the 2016-2019 Malibu hybrid shows why charge matters: below a pack voltage of 154 to 210 V, depending on temperature, the system stops trying to crank until a recovery charge is done. CARB requires the energy storage monitor to catch faults that prevent engine starts.
P0E4E at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 10 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0E4E
- Engine does not turn over when the hybrid system calls for it
- Vehicle runs electrically only or shows a stop-safely warning
- No start at all once the battery is depleted
Common causes of P0E4E
- Most likelyHigh-voltage battery too low to crank, often after repeated failed starts
- PossibleMechanically seized engine or blocked transaxle
- PossibleFault in the cranking motor-generator, its inverter or a conventional starter
- Less likelyCrankshaft speed not detected because of a sensor or signal fault
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hybrid control moduleHv batteryEngine starter
What each part of P0E4E means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 4E | The exact fault in that area. |
What to do next
- Note P0E4E 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 P0E4E
What does P0E4E mean?
P0E4E means "Engine Failed to Crank". P0E4E reports that the hybrid system commanded an engine start but the crankshaft did not turn, or did not reach the cranking speed it expected. It is a generic code, so it means the same on every make.
Is it safe to drive with P0E4E?
Drive gently and only to a workshop. With P0E4E the car can go into limp mode (reduced power) to protect itself.
Will P0E4E fail an emissions test?
P0E4E is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P0E4E to fix?
Difficulty: workshop only. A typical repair takes 1 to 10 hours of work. This is a job for a workshop.
Will P0E4E clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.