Credov

U0122 fault code: what it means

U0122: Lost communication with the vehicle dynamics (stability control) module.

Network (communication between modules) · Costly if missed

Usual causes, most likely first

  1. module power or fuse fault
  2. CAN wiring fault
  3. weak 12 V battery

U0122 by make

Subaru

VDC data not received over CAN (lost communication with VDC module). ABS/VDC lights may be on.

Usual causes: VDC module power or connector; CAN wiring fault

Not sure what U0122 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.