U0210 indicates that the vehicle's control network has lost communication with the Seat Control Module C, which manages functions such as seat position adjustment, memory settings, and heating/cooling. When this code is set, the module is not responding on the CAN bus, so its features may become inoperative.
The internal electronics of the seat control module have failed, preventing it from transmitting or receiving CAN messages.
Chafed, broken, or corroded wires or a loose/connector with bent pins can interrupt the CAN signal or power/ground supply.
A blown fuse, faulty relay, or high‑resistance ground can deprive the module of proper voltage, causing it to go offline.
A short to voltage or ground on the CAN lines, or a missing/incorrect termination resistor, can disrupt communication with multiple modules, including the seat module.
Although uncommon, a fault in the PCM/ECM’s CAN transceiver or related circuitry can prevent it from exchanging messages with the seat module.
It means the vehicle’s network has lost communication with the Seat Control Module C, so the module is not responding on the CAN bus.
No. PCM/ECM replacement is rarely needed for this code; most cases are due to wiring, connector issues, or the seat module itself.
Yes, the vehicle remains drivable, but seat adjustments, memory functions, and heated/cooled seats may not work. Safety systems are typically unaffected unless other codes are present.
Keep connectors clean and secure, protect wiring from abrasion or heat, and address any corrosion or moisture intrusion promptly.