P0E48 code meaning
Hybrid/EV Battery Pack Voltage Sense E Circuit Intermittent/Erratic
Powertrain system Generic code P0Exx codes Check engine light
What P0E48 means
P0E48 marks pack voltage measurement E as unsteady: the signal jumps, drops out for fractions of a second or changes faster than a battery voltage can, and then returns to normal. Because the fault comes and goes, it is often found only as a stored code after a brief warning. No manufacturer documents P0E48 publicly, and GM's published hybrid tables, for example those of the 2013 two-mode trucks, test pack voltage only for low, high and rationality faults on channel A. CARB requires circuit monitoring of battery voltage sensors in the energy storage system. Steady faults of the same channel are P0E44 to P0E47; channel F uses P0E4D for this fault type. Loose or corroded sense terminals and chafed leads that react to vibration or heat are the usual suspects.
P0E48 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 6 hours
- Clears after repairAfter a drive cycle
Symptoms of P0E48
- Warning light that comes and goes
- Brief losses of electric power, often on rough roads
- Stored code without a current fault
Common causes of P0E48
- Most likelyLoose, pushed-back or corroded terminal on the channel E sense lead
- PossibleChafed sense lead that shorts briefly under vibration
- Less likelyIntermittent fault in the battery controller input
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv battery pack voltage sense eWiring harnessBms
What each part of P0E48 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 48 | The exact fault in that area. |
What to do next
- Note P0E48 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 P0E48
What does P0E48 mean?
P0E48 means "Hybrid/EV Battery Pack Voltage Sense E Circuit Intermittent/Erratic". P0E48 marks pack voltage measurement E as unsteady: the signal jumps, drops out for fractions of a second or changes faster than a battery voltage can, and then returns to normal. It is a generic code, so it means the same on every make.
Is it safe to drive with P0E48?
Drive gently and only to a workshop. With P0E48 the car can go into limp mode (reduced power) to protect itself.
Will P0E48 fail an emissions test?
Yes, it can. P0E48 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 P0E48 to fix?
Difficulty: workshop only. A typical repair takes 1 to 6 hours of work. This is a job for a workshop.
Will P0E48 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.