EV Charging Problems: Complete Troubleshooting Guide

Most EV charging problems fall into a handful of symptom families, and nearly all of them can be narrowed down in a few minutes once you know what to check. Start by matching what is happening to the right symptom below, rule out the easy causes first (a loose plug, a wrong cable, a tripped breaker), then follow the link to the step-by-step guide for your exact issue. If you want to rule out the cable itself before anything else, a quality Type 2 charging cable that is correctly rated and undamaged removes one of the most common variables straight away.

One safety rule sits above all of this: if any part of the cable, plug or charger is hot to the touch, smells of burning, or shows scorch marks, stop immediately and unplug at the source. That is not a troubleshooting step, it is a stop-everything moment. More on that below.

How do I use this troubleshooting hub?

This page is the overview. Each section names a symptom, gives you the two or three things worth checking first, then points you to a deep guide that walks through the full fix. Work top to bottom if you are not sure which family your problem belongs to, because the sections are roughly ordered from "nothing happens" through to "something feels wrong".

Before you dive in, here is the fastest way to triage. Use the table to jump straight to the most likely cause and the guide that covers it.

My EV will not charge at all

If plugging in produces no light, no click and no charge session, work through the obvious causes before assuming a fault. Check the charger has power at the consumer unit, that the cable is pushed fully home at both ends until it latches, and that the car is in a state that allows charging (some models will not start a session if locked out, in a certain drive mode, or if a charge timer is active). A different cable or a different socket is the quickest way to find out whether the problem is the car, the charge point or the lead.

If none of that wakes it up, the issue is usually at the charge point or in the car's onboard charger rather than the lead itself. The full walkthrough covers error lights, app states and when to call your installer.

Read the deep guide: My EV will not charge at home.

It charges, but far too slowly

Slow charging is usually normal physics rather than a fault. A cold battery charges slowly until it warms, many cars taper the rate as they approach full, and a shared home circuit or load-balancing setup will deliberately cap the current. The two things worth checking first are the actual current rating of your cable and whether your charger or car is set to a reduced amperage in its settings.

A thin or under-rated cable can also hold you back: a 16A lead will never deliver the speed of a correctly rated 32A one. If you suspect the lead, compare it against a properly rated option from our EV charging cables range.

Read the deep guide: Why is my EV charging slowly.

Charging stopped on its own overnight

If you plugged in before bed and woke up to less charge than expected, the most common cause is a timer, not a fault. Smart chargers, car charge schedules and off-peak tariff windows all stop the session automatically, and a car that reached a set charge limit will also stop on purpose. Check for a scheduled charge in the car, a time-of-use window in the charger app, and any charge limit you may have set.

Genuine mid-session drop-outs are different: they usually point to a lost handshake between car and charger, a brief power interruption, or a connection that worked loose. The deep guide explains how to tell a timer apart from a fault.

Read the deep guide: EV stopped charging overnight.

The plug is stuck in the car

A Type 2 plug that will not come out is almost always a locking issue, not a broken connector. The car locks the plug in place during a session for security, so the first step is to end the charge cleanly and unlock the car: pressing the unlock button on the key fob often releases the latch. Some cars have a manual release in the boot or a pull cord near the charge port for exactly this situation.

Do not yank it. Forcing a latched connector can damage both the plug and the car's inlet. The full guide covers the manual release points by common model type and what to do if the latch itself has jammed.

Read the deep guide: Type 2 plug stuck in the car.

Something feels wrong: hot cable, tripping, or smells

This family is different from the rest, because here your first job is safety, not diagnosis. If the cable, plug, charger or socket is hot to the touch, smells of burning or melting plastic, or shows any scorching or discolouration, stop the charge and unplug at the source immediately. Do not keep using it, and do not keep resetting it to see if it holds. Heat and smell mean a real electrical problem that can get worse fast.

Hot or burning cable

A charging cable should feel warm at most, never hot. Heat usually comes from a damaged lead, a poor or partial connection, or a cable being run under its rating. Unplug, let it cool, and inspect for melted plastic, exposed conductors or bent pins. If you find any damage, retire the cable: do not tape it up and carry on.

Read the deep guide: EV charging cable getting hot, and learn the warning signs in how to spot an unsafe EV charging cable.

RCD or breaker that keeps tripping

A residual current device trips to protect you from earth leakage, so a charger that keeps tripping the RCD is telling you something is wrong. Common causes are moisture in a connector, a wiring fault, or a faulty charger or cable. You can safely try one reset after checking the plug is dry and seated, but if it trips again, stop. Repeated tripping is a job for a qualified electrician or the charger manufacturer, never for repeated resetting.

Read the deep guides: EV charger tripping the RCD and my home charger keeps tripping: common causes.

When to call a professional

Any fault involving the fixed wiring, the consumer unit, the RCD, or a charger that keeps cutting out is not a DIY fix. Call a qualified electrician or your charge point's manufacturer. The one thing you can rule out yourself cheaply is the cable: a damaged or wrong lead is a common, easily replaced cause, and swapping in a known-good one tells you a lot before you pay for a callout.

Granny or portable charger problems

A granny charger (the portable lead that plugs into a normal socket) has its own failure modes. The in-cable control box does a self-check on start, so a dead unit often points to a problem with the socket, the box's overheat cut-out, or the wrong socket type for the plug. Check the wall socket works with something else, make sure you are not running through an extension lead or a daisy chain, and let the unit cool if it has thrown a thermal cut-out.

Because these units draw a steady high current for hours, socket quality matters more than people expect. If your current unit is unreliable, a better-made option from our portable EV chargers range is often the simplest fix.

Read the deep guide: Granny charger not working.

Jargon you hit while troubleshooting

EV charging is full of acronyms, and a fix often hinges on understanding one term. Mode 3, tethered versus untethered, CP and PP pins, PEN fault protection, and the difference between your car's onboard charger and the wall unit all come up when you are diagnosing a problem. Rather than guess, check the term.

Read the reference: EV charging glossary.

What should I check before calling anyone?

Run this quick order of checks for most non-safety problems. It takes a few minutes and resolves a large share of everyday charging issues.

1. Confirm the charge point has power at the consumer unit and no breaker has tripped.
2. Reseat the cable fully at both ends until it latches, and check both connectors for dirt, water or bent pins.
3. Check the car for an active charge schedule, a charge limit, or a lock state that blocks charging.
4. Check the charger app for a time-of-use window, a paused session, or an error code.
5. Swap in a different, correctly rated cable to rule the lead in or out.
6. If anything is hot, smells, or trips the RCD more than once, stop and call a professional.

A correctly rated, undamaged cable is the cheapest variable to eliminate, which is why it is worth owning a known-good spare. Browse EV charging cables and portable EV chargers if yours is due for replacement.

Frequently asked questions

Why is my EV not charging even though everything is plugged in?

The usual causes are a charge point that is not energised, a cable that is not fully seated at both ends, or a car in a state that blocks charging such as an active timer or lock-out. Check power at the consumer unit, reseat the cable until it latches, and look for a scheduled charge in the car before assuming a fault.

Is it normal for an EV charging cable to get warm?

Slightly warm is normal because the cable carries a high current for hours. Hot to the touch is not. If the cable, plug or socket is hot, smells of burning, or shows scorch marks, stop and unplug immediately, then inspect for damage and replace the cable if you find any.

Why does my EV charge slowly?

Slow charging is usually normal, not a fault. A cold battery charges slowly until it warms, the rate tapers near full, and a shared or load-balanced circuit caps the current on purpose. Check that your cable is rated for the current you expect and that no reduced-amperage setting is active in the car or charger.

Why does my home charger keep tripping the RCD?

An RCD trips to protect against earth leakage, so repeated tripping means something is wrong, often moisture, a wiring fault, or a faulty charger or cable. You can try one reset after checking the plug is dry and seated, but if it trips again, stop resetting and call a qualified electrician or the charger manufacturer.

How do I get a Type 2 plug unstuck from my car?

The plug locks during a session, so end the charge cleanly and unlock the car, which usually releases the latch. Pressing unlock on the key fob often works. Many cars also have a manual release in the boot or a pull cord near the charge port. Do not force it, as that can damage the connector or inlet.

When should I call an electrician instead of troubleshooting myself?

Call a qualified electrician or the charger manufacturer for anything involving the fixed wiring, the consumer unit, the RCD, or a charger that keeps cutting out. The one thing you can safely rule out yourself is the cable: swapping in a known-good, correctly rated lead often identifies the problem before you pay for a callout.