The U0244 code means a module on the vehicle’s communication network can no longer exchange data with the Running Board Control Module. It is a network‐level fault indicating the module has dropped off the data bus, rather than a mechanical failure of the running board mechanism itself. The interruption is most often caused by electrical, wiring, or module power issues.
Opens, shorts, or poor pin connections in the harness leading to the running board module are the most frequent cause of lost communication.
A blown fuse, faulty relay, or corroded ground point can completely shut down the module, causing the network to report it as missing.
Because running boards are mounted low, connectors and modules are easily exposed to water, salt, and road debris, leading to signal interruption.
Internal damage or a failed network transceiver inside the module itself can prevent it from responding on the data bus.
An open, short, or excessive resistance in the communication bus lines can isolate the running board module from the rest of the network.
Although rare, a fault in a central gateway or body control module that routes messages can trigger this code when all other causes have been ruled out.
Yes. This code affects running board operation but does not typically impact engine performance, braking, or steering safety.
No. U0244 is a network communication fault and is not an emissions‑related diagnostic trouble code.
Almost never. The root cause is almost always a wiring, power, or running board module issue rather than the engine computer.
Water can intrude into the running board motor or control module connectors, temporarily disrupting communication until the area dries or corrosion permanently damages the circuit.