Should you repair or replace your EV charger?
Updated August 2026
← Every repair-or-replace call
Repair the cable or the circuit feeding it, because the charger box itself almost never fails: a damaged cord or connector runs $100–300, while a new hardwired Level 2 unit costs $400–800 plus $300–1,200 to install. A home EVSE has no moving parts beyond a contactor, and decent units are built for 10-plus years of daily plugging in. What wears out is everything you handle or expose to weather: the cable that gets driven over, the connector dropped on concrete, the ground-fault protection that trips in the wet, and the terminations at the breaker or the 14-50 receptacle.
The short version
Diagnose in the order that things actually break. The cable and connector absorb the physical abuse, so inspect them first for cuts, melted pins, or a cracked handle, and price a $100–300 replacement cord before considering anything larger. The circuit comes next, since a tripped breaker, a nuisance ground-fault trip, or a loose terminal at a 14-50 receptacle explains most dead chargers, and a warm or discolored outlet needs an electrician that week. Only then do you suspect the unit, and at that point warranty status matters, because most home chargers carry 3 years and some 5. One other reason justifies replacement outright: a deliberate jump to higher amperage, which is a circuit change rather than a repair.
Your situation, decided
| Situation | Verdict | Why |
|---|---|---|
| Cut, cracked, or crushed charging cable | Repair | A $100–300 cable or connector on an otherwise sound unit |
| Charger dead, breaker tripped or ground fault open | Fix the circuit | The supply failed, not the charger; start at the panel |
| Charges other cars but not yours | The car is the fault | A handshake or onboard-charger problem; test elsewhere to confirm |
| Internal fault code, unit past a 3-year warranty | Replace the unit | Sealed electronics, no field repair; $400–800 plus install |
| Housing cracked or water sitting inside an outdoor unit | Replace | Moisture in the electronics is not something you patch |
| You want 48-amp charging from a 32-amp unit | Replace and upsize | Needs a 60-amp circuit and heavier wire, so plan the whole run |
What each path costs
Repairs typically run $100–300; a replacement is $700–2,000 installed. A Level 2 home charger lasts 10-plus years. Cables and connectors wear out first, so replace the unit only for an internal fault or a deliberate amperage upgrade. Price your own number on the home maintenance cost calculator before you commit either way.
The repair-or-replace call is easy when you know the unit's age and service history. OnOtto keeps both, plus the maintenance that delays this decision for years.
Start your home's service log, freeFrequently asked questions
My EV will not charge. Is it the charger or the car?
Isolate it in three moves. Check the charger for status lights or a fault code and confirm the breaker is on. Then plug the car in somewhere else, at work or a public Level 2 station, and see whether it accepts a charge. Finally, try a different vehicle on your home unit if one is around. A charger that faults with every car is the charger. A car that fails everywhere has an onboard charger or port problem, which is dealer territory and commonly $500–2,000. An annual inspection catches the easy half early.
Why does my EV charger keep tripping the breaker?
Moisture and heat lead the list. Water in an outdoor connector, a nicked cable, or a corroded plug creates exactly the small leakage current ground-fault protection exists to catch. Heat at a loose terminal, especially on a 14-50 receptacle carrying a sustained 32-amp draw, trips breakers too and is a genuine fire risk. Hardwiring the unit removes that weak link. Have the terminations torqued and the cable inspected before buying hardware. The cost of leaving it is measured in scorched receptacles, not inconvenience.
Is upgrading from a 32-amp to a 48-amp charger worth it?
Only if your panel and your driving justify it. A 32-amp unit delivers roughly 7.7 kW, about 25 miles of range per hour. A 48-amp unit delivers near 11.5 kW and closer to 37 miles per hour, but it demands a 60-amp circuit, heavier wire, and a hardwired connection. For a driver who plugs in overnight, the slower unit already refills a normal day several times over. Upgrade when two EVs share one charger or you drive long distances daily. Otherwise put the $700–2,000 toward the upkeep of what you have.