Scania WTA DTC 221 Glow plug

WTA WTA control unit · Scania

Code 221 (decimal). Some diagnostic tools show it in hexadecimal as 00DD.

In short

Impermissible voltage level in the glow plug circuit.

Applies to: WTA1

What does Scania WTA fault code 221 mean?

What causes Scania DTC 221?

How to fix Scania WTA fault code 221?

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This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.