SPN 512
INFO
Driver's demand torque
The truck's control module (ECU) reports a fault on: Driver's demand torque.
SPN 512 means a truck control module (ECU) flagged a fault on driver's demand torque, part of the Engine system on heavy-duty diesel trucks. DERATE rates it INFO: it does not limit driving; have it checked at the next service.
Engine
Can I keep driving?
Yes. It is informational and does not limit driving; have it checked at the next service.
Data: DERATE verified base, updated October 2026
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