U0467 indicates the powertrain control module has detected invalid or implausible data being transmitted from the fuel additive control module. This code typically appears on diesel vehicles equipped with a fuel-borne catalyst or diesel exhaust fluid dosing system. The fault points to a communication or data integrity issue rather than a mechanical failure.
Internal electronic failure of the module can cause it to transmit corrupted or out-of-range data.
Chafed, broken, or corroded wires between the modules disrupt CAN bus signals.
Loose, oxidized, or bent pins create intermittent communication faults.
Short circuits, open circuits, or incorrect termination resistance on the CAN network.
Incompatible firmware versions between the PCM and fuel additive module after updates or repairs.
Rare; internal driver or logic failure in the powertrain control module itself.
No, PCM failure is a rare cause; wiring, connectors, or the fuel additive module itself are far more common.
Low system voltage can corrupt module communication, so verify battery and charging system health first.
The vehicle may enter reduced-power mode and emissions will be out of compliance; repair promptly.
Clearing only resets the light; the underlying communication fault will return until the root cause is corrected.