P2504 — Charging System Voltage High

What Does P2504 Mean?

P2504 is a diagnostic trouble code indicating: Charging System Voltage High. This code relates to the powertrain system. It has been reported in NHTSA complaints across 2 different vehicle models.

Common Causes

🔍 Sensor or control module malfunction

P2504 Reports by Year

2024

1

2021

1

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"FOR MONTHS MY JEEP HAS HAD ISSUES. ALL THE DASH LIGHTS WILL LIGHT UP WARNING ME OF ISSUES. THE JEEP HAS STOPPED DEAD WHILE DRIVING AND NO WARNING . THERE ARE TIMES I START THE JEEP AN LIGHTS COME SO I TURN IT OFF AND RESTART AND THE LIGHTS GO AWAY. OTHER TIMES I WILL BE DRIVING AND THE LIGHTS COME O"
— Jeep Compass owner, 02/26/2021

"Code P2504 and code P063A. Received these codes when I already have a new battery and car is only at 70k miles. Caused the vehicle to go in to lower saving mode in to a turn and almost hit other vehicles."
— Jeep Cherokee owner, 06/20/2024

Source: NHTSA Complaints Database

Most Reported Vehicles for P2504

Based on NHTSA owner complaint data.

#	Vehicle	Reports
1	JEEP CHEROKEE
2	JEEP COMPASS

Frequently Asked Questions

Can I drive with this code?

It depends on the severity. If the vehicle runs normally, short trips are usually OK. If you notice performance issues, drivability problems, or warning lights beyond the check engine light, get it checked soon.

Will this code clear itself?

Some codes clear automatically after the underlying issue is fixed and several drive cycles pass. But the root cause must be addressed first.

How do I find the exact cause?

A code alone doesn't pinpoint the failed part. You need a diagnostic scan ($50-150 at most shops) that reads freeze frame data and live sensor readings to identify the specific component.

What To Do Next

Possible Fixes

🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
🔧 Test the relevant sensor(s) with a multimeter before replacing
🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P2504: Charging System Voltage High