Pick a colour. The page changes, like the app does.
Officially? A wall of jargon. To most people? Absolutely nothing. That's exactly why we built the app.
Plug into any code reader and you'll get the same line every other app shows you. Technically correct. Practically useless.
"The engine's computer has seen the car's electrical voltage drop lower than it should. Usually that's the battery or the charging system. Start with the simple bits: a tired battery, loose or corroded terminals, or a poor earth strap. Then check the alternator and its drive belt. Many modern cars use smart charging that lets the voltage dip at times, so one low reading isn't proof on its own."
Worth checking in roughly this order. Don't jump straight to the expensive fix:
The code itself is a snapshot. The fault sets after the car's watched the numbers over a whole drive cycle. Here's what's worth keeping an eye on:
Live simulation on the readings our free demo drive supports. This is how the app’s dials move.
Codes rarely tell the whole story. The clever part is reading them together, and against your exact car. Here's the kind of thing it catches:
The engine's computer has seen the car's electrical voltage drop lower than it should. Usually that's the battery or the charging system. Start with the simple bits: a tired battery, loose or corroded terminals, or a poor earth strap. Then check the alternator and its drive belt. Many modern cars use smart charging that lets the voltage dip at times, so one low reading isn't proof on its own.
Usually, as long as the battery warning light stays off. Have the battery and charging tested soon, as a weak battery can leave you with a car that won't start. If the battery light comes on, the battery may not be charging and the car may only run a short while, so head somewhere safe.
Check the battery voltage engine off, then running. If it rises clearly once running, the alternator is charging and the battery is the more likely suspect. If it stays low running, look at the alternator and belt. A proper battery test settles it.
Cleaning terminals costs nothing. A battery or belt is a modest spend. An alternator is the dearer end. Some modern cars need the new battery registering to the car, which a garage can do.
Free app. Plug in, and get every code in plain English, plus the connections you'd never spot.