This code indicates that the engine or body control computer is receiving corrupted, implausible, or missing data from the Anti-Lock Brake System (ABS) control module over the vehicle's communication network. It is a network/data-validity code, not an ABS hydraulic or wheel-speed fault by itself. The receiving module flagged the ABS module's message as invalid.
The ABS module itself is the most common source, either failing internally or dropping off the communication bus. This is often accompanied by a hard ABS light and no communication with a scan tool through the ABS module.
Corroded, loose, or damaged pins at the ABS module connector, or an open/chafed wire in the CAN bus lines to the module, can cause invalid or intermittent data. Water intrusion into the connector is common on some vehicles.
If the ABS module is losing battery, ignition, or ground supply intermittently, it will drop off the bus and other modules will report invalid data. A blown ABS fuse or poor ground point can mimic a failed module.
A shorted or open CAN high/low circuit, or another module corrupting bus traffic, can cause the receiving module to flag ABS data as invalid. This is less common than an ABS-side fault but should be checked when the ABS module itself communicates normally.
Rarely, the module that sets the U0415 may misinterpret valid ABS data due to internal corruption. This is uncommon and should only be considered after the ABS module, wiring, power/ground, and bus integrity are all verified.
Not necessarily. It means the data from the ABS module is invalid or missing. The ABS module is a likely cause, but wiring, connector corrosion, a fuse, a ground, or a CAN bus fault can all produce the same code. Proper diagnosis is required before replacing any module.
Often yes, but ABS and stability control may be disabled, so brake performance in a panic stop or on slippery surfaces may be reduced. If the vehicle is in limp mode or the speedometer is erratic, have it diagnosed promptly.
Usually no. U0415 is set by a receiving module when the ABS module's data is bad or absent. The fault is almost always on the ABS side — the module, its power/ground, its connector, or the bus wiring. PCM/ECM replacement should be a last resort only after everything else is verified.
No. Clearing the code only removes the stored flag. If the underlying communication fault remains, the code will return, often on the next drive cycle.