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U033C: The high voltage battery interface control unit C does not have the right

The high voltage battery interface control unit C does not have the right configuration. It is solved at the workshop with a diagnostic tool.

Code U033C at a glance
CodeU033C
SystemCommunication network
GroupU03xx, Control unit software and configuration
TypeGeneric: it means the same on every make

How to read and clear U033C with Final OBD

Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see U033C with its description and whether it’s confirmed, pending or permanent.

If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.

Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.

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What does code U033C mean?

The high voltage battery interface control unit C does not have the right configuration. It is solved at the workshop with a diagnostic tool.

How do you clear U033C?

With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, U033C comes back.