What Does the Engine Code P3000 Mean?

When you see the engine code P3000, it means your car has a battery control system malfunction.
Written by Kaitlin May
Reviewed by Melanie Reiff
Your car’s battery is arguably the most vital component of your car. When it’s not recharging properly, the engine code P3000 will be triggered. While your car may run smoothly at first, it won’t be long before you notice sporadic system failures in your car.
Car battery alerts can cover a range of engine issues. That’s why having the ability to identify the source of diagnostic trouble codes (DTC) with an OBD-II code reader is key to getting your car back on track in a cost-effective, efficient way.
Thanks to the #1-rated
car insurance
shopping and savings app
, you can get the full download on the engine code P3000—including what it means, how to address it, and what to do to ensure that your car stays fully charged.
Compare auto insurance policies
No spam or unwanted phone calls · No long forms
Find insurance savings

What does the engine code P3000 mean?

Definition: Battery control system malfunction
The engine code P3000 is displayed when the high voltage (HV) battery responsible for powering your vehicle has a decreased state of charge (SOC). The HV battery can lose its luster when your car is left in neutral, running out of gas, or if the HV control system is faulty.

How much will it cost to fix?

A P3000 engine code diagnosis and repair will cost between $75 and $150 for the hour it takes to handle. 

What can cause the P3000 engine code?

Low fuel can impact your car’s battery control system. If you’re postponing filling your gas tank until tomorrow, you might want to reconsider.
Additional causes for the P3000 engine code can be:
  • Damage to the HV control system
  • Issues with the HV battery assembly

Common Symptoms of the P3000 engine code

Expect a visit from your check engine or “service engine soon” lights when you’ve got a P3000 issue on your hands. 
You likely won’t see any problems with drivability  when the code is active If you let it go for too long, though, you could start noticing some frustrating system faults that accompany a weak battery, like the following:
  • Sporadic warning lights may turn on and off 
  • Ignition, door locks, windows, and other features may operate inconsistently
  • Auto start/stop system may fail
  • Car alarm might go off spontaneously
  • Shifting gears out of park may no longer be possible

How serious is the P3000 engine code?

Overlooking the P3000 engine code, even when your car seems fine to drive, is never a good idea. Once your battery’s vitality is on the decline, it’ll only pose more serious issues with time. 
Maintaining a healthy amount of fuel regularly and addressing any battery blunders as soon as they present themselves can save you a nice chunk of time and money in the long run.

Can I fix the P3000 engine code myself?

Resolving a P3000 engine code could be as simple as getting the right amount of gas in your car, which you can easily manage on your own. 
If that doesn’t dispel the DTC, then you can inspect the wiring in the HV system for damage. If you notice wear and tear or corrosion on any of the related parts and have the tools and expertise to repair them, then you’ll be on your way to fixing the problem independently.
However, since the P3000 engine code comes along with a suffix DTC for several makes and models, you may need the support of a technician to pinpoint the issue
Pro tip: If you work from home or happen to have a low mileage car, that can impact your battery’s lifespan. Take your car for a long drive at least once a week to keep it charged.
MORE: How to know if a mechanic is taking too long with car repairs

Finding insurance for your vehicle

Maintaining your car with the cheapest
car insurance
out there is easy with
If you’ve been overpaying for your insurance and avoiding the whole shopping experience, then don’t waste any more time without the car insurance comparison pros at Jerry.
In just 45 seconds, Jerry performs a price and coverage analysis of over 50+ top companies to find you customized insurance options. 
With their team of intuitive licensed brokers, they’ll do all the maintenance on your car’s coverage for you. You can join Jerry users and start saving an average of $887 per year when you download the app today.
“By using
I found a policy that HALVED my monthly expenses with Geico! Best of all, they helped cancel my policy and got me a refund on my premium. This app is a lifesaver.” —Josiah T.
Jerry sends free alerts to keep your car up-to-date so you can avoid costly repairs
* checking your rate won’t affect your credit score
Get ahead of my car maintenance
* checking your rate won’t affect your credit score
Estimate your repair costs for free with GarageGuard™
Simplify your car maintenance with Jerry.
Try GarageGuard™

Easiest way to compare and buy car insurance

No long forms
No spam or unwanted phone calls
Quotes from top insurance companies
Find insurance savings