Diagnose right in your browser — plug in an ELM327 and the site reads your car itselfProgram for Windows and macOS — all-module scan on any make
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Volkswagen Transporter (T4–T7) diagnostics

Volkswagen Transporter (T4–T7) (1990–2026): free AI diagnosis by symptoms, fault codes or a dashboard photo — plus OBD-II reading right in the browser.

What usually goes wrong on the Volkswagen Transporter (T4–T7)

  • На 2.5 TDI R5 (T5, AXD/AXE) обрывается цепь привода масляного насоса и разрушается балансирный вал — мотор клинит без предупреждения.
  • На 2.0 TDI CR 180 л.с. (CFCA, T5 GP) трескаются поршни и растёт расход масла с характерным стуком на прогретом моторе.
  • Форсунки и клапан EGR закоксовываются, сажевый фильтр забивается на городских пробегах — потеря мощности и аварийный режим.
  • Двухмассовый маховик и сцепление на гружёных машинах ходят 120-180 тыс. км, дальше вибрация и звон на холостых.

These are the model's typical weak points, not a verdict on your particular car: the AI keeps them in mind, but the diagnosis comes from your symptoms and your codes.

Fault codes that come up most often

P0401P0300P0380

Click a code to open the breakdown: what it means, how serious it is and what to check first.

1

Describe the problem

Tell the AI chat what your Volkswagen Transporter (T4–T7) is doing — noises, warning lights, behavior. It knows the model's typical weak points and asks the right follow-up questions.

2

Read the codes

Plug an ELM327 adapter (over USB or Bluetooth LE) into the OBD-II port and read fault codes right in the browser on the Connect adapter page — no software to install.

3

Get a verdict

The AI ranks the likely causes, tells you what to check first and whether it's safe to keep driving.

Problem with your Volkswagen Transporter (T4–T7)?

Describe what's happening or paste the fault codes — the AI will narrow down the cause and tell you what to check first.

Start diagnosis

What can be read from this car

Through the OBD-II port on your Volkswagen Transporter (T4–T7) you can read engine fault codes, live sensors, readiness monitors and a freeze frame — with an ELM327 adapter, including right in the browser. If the car has a CAN bus (roughly 2008 and newer), the program additionally polls the remaining modules:

  • ABS / ESP
  • Приборная панель
  • Подушки безопасности
  • Шлюз
  • Электроусилитель руля
  • Иммобилайзер
  • Центральная электрика

The list of modules depends on the trim and options: the program shows the ones that actually answered.

For a deeper scan of your Volkswagen Transporter (T4–T7) — all modules, live data, freeze frames — use the free Diagnost program for Windows or macOS with an ELM327 adapter.

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