P0E5F: Battery Charger Coupler Temperature A Too High

P0E5F is not a sensor fault: the coupler temperature sensor A works, but the charging inlet really got too hot. Three makers document it. Ford links it on the 2021–2023 Mustang Mach-E (stored in the SOBDM) to a red flashing charge indicator and no charging from a 48 A level 2 station, while 32 A or less may still work; SSM 51866 calls for a new charge port. GM's PIT5904 for the 2022 Hummer EV and BrightDrop EV600 says the pin temperatures are watched all the time and that, once the code has tripped, charging resumes only after the plug is pulled and reinserted, even when the pins have cooled; worn station plugs are a suspect. Mercedes stores P0E5F97 in the AC charger of several 2024 plug-in hybrids in strong sun and calls it no fault, with power cut back until the temperature drops.

Symptoms

• Charging stops or runs at reduced power
• Charge indicator red or flashing red, warning in app or cluster
• Charging restarts only after unplugging and replugging

Most likely causes

• Excessive contact resistance in the vehicle charge port (Ford replaces the port)
• Worn or damaged plug of the charging cable or station
• High ambient temperature or direct sun while charging (Mercedes)
• Charging control software (GM update announced)

What to check, in order

Start with the simplest. You can tick off each step.

1. Read the codes with a hybrid-compatible scanner and write down the freeze frame data
2. Check the sensor's ground and make sure the signal wire is not receiving voltage from another circuit.
3. Make sure the battery cooling air intake is clean
4. Check the 12 V auxiliary battery, which can also trigger warnings
5. Leave any high-voltage measurements to a specialized repair shop

What each character of P0E5F means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• E: Subsystem depends on the code range
• 5F: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0E5F?

If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.

What causes code P0E5F?

The most common causes are: excessive contact resistance in the vehicle charge port (Ford replaces the port); worn or damaged plug of the charging cable or station; high ambient temperature or direct sun while charging (Mercedes).

Related codes

• P0D99Battery Charger Coupler Temperature Sensor A Circuit
• P0D9ABattery Charger Coupler Temperature Sensor A Circuit Range/Performance
• P0EEEBattery Charger Coupler Temperature B Too High
• P2E4EBattery Charger Coupler Temperature C Too High
• P2E53Battery Charger Coupler Temperature D Too High

Sources

• static.nhtsa.gov: MC 10241595 0001
• static.nhtsa.gov: MC 10211752 9999
• static.nhtsa.gov: MC 11000706 0001

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.