What causes a U0751 code?

U0751 can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a U0751 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with U0751 active.

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

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OBD-II

U0751

Network/CAN bus communication code U0751

What it means

Lost communication with the Telematics Control Module. Services like GPS, emergency SOS, and remote start are disabled.

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