What P0E15 means
The HV battery pack coolant heater A reports a control performance condition.
How the engine computer detects it
Battery preheating may be impaired in cold weather.
Written from public technical sources and not yet checked by a mechanic. How we write these pages
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Common causes
- Heater element aged - low output Most likely
- Supply voltage low under load Possible
- Pack cell imbalance approaching service threshold Less likely
How to diagnose P0E15
- Read every stored code with an OBD-II scanner. If misfire or fuel trim codes are there too, fix those first: they often cause this one.
- Inspect the parts involved: hv battery pack coolant heater a, wiring harness, bms.
- Work through the causes above from most to least likely, cheapest checks first.
- Clear the code and drive a full drive cycle to confirm the repair held.
Vehicles that report P0E15 most
| Vehicle | Years | Reports | Share | Median miles |
|---|---|---|---|---|
| Chrysler Pacifica | 2020–2022 | 9 | — | |
| Jeep Wrangler | 2021–2022 | 4 | — |
Counts of owner complaints to the NHTSA that mention P0E15 (14 in total), not failure rates: popular models get more complaints simply because more of them are on the road. Models with fewer than 3 complaints are left out.
Reading the code
- P
- Powertrain
- 0
- Generic (SAE) code
- E
- Other powertrain
- 15
- Specific fault
Questions drivers ask
Can I drive with code P0E15?
If the car drives normally, drive gently to a shop that services hybrids. If it shows a hybrid system warning, loses power or won't go into Ready, pull over and have it towed. Never touch orange high-voltage cables.
This page is general information, not a substitute for a professional diagnosis. Repair costs are rough estimates for parts and labor and vary by vehicle and region.