#EV
8 posts in Car Diagnostics blog about "EV" — OBD-II diagnostics, DTC codes, repair. ← All posts
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VW ID.3 and ID.4: what diagnostics looks like on the MEB platform
A dedicated electric platform means most of what generic OBD-II was designed to read does not exist. Here is what still matters and what still works.
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Changan and BYD: OBD-II access on combustion and electric models
BYD sells mostly electric and plug-in hybrid vehicles, which changes what OBD-II can tell you. Changan combustion models read conventionally. The difference is worth understanding first.
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Polestar, Zeekr and NIO: diagnostics on newer EV platforms
Three EV brands built after generic OBD-II stopped being relevant. What that means for owners, and which readings still repay attention on any electric car.
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Tesla Model 3 and Y: what OBD gives you and what it does not
There is no standard OBD-II socket on a Model 3 or Y, and no emissions data to report even if there were. Here is what is actually accessible and what genuinely matters.
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Electric car will not start: why the cheap battery is at fault, not the expensive one
The most common electric car failure is an ordinary lead-acid battery costing a hundred dollars. Why it works harder in a car with no engine than in a petrol one, and how to keep an eye on it.
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OBD on an electric car: what a standard built for emissions actually shows
OBD-II was invented to monitor exhaust. An electric car has no exhaust — so half the services lose their purpose. What remains useful, and where manufacturer requests take over.
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Buying a used electric car: why mileage tells you almost nothing
On a petrol car mileage is the main reference. On an electric car it is secondary: everything hinges on the traction battery, and that ages from conditions and charging habits rather than kilometres.
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Electric Vehicle OBD-II Diagnostics: Nissan Leaf, BYD, Renault Zoe — Battery and Motor
How OBD-II and BMS protocols help diagnose EV battery degradation: P0A80 cell deterioration, SOH monitoring, cell balancing, inverter temperature — what you can read without dealer tools.