Credov

B10DA fault code: what it means

B10DA: Immobiliser communication error with the PCM. Engine may not start.

Body · Costly if missed

Usual causes, most likely first

  1. start stop unit or PCM
  2. CAN wiring fault
  3. unit replaced without programming

B10DA by make

Mazda

Immobiliser communication error with the PCM. Engine may not start.

Usual causes: start stop unit or PCM; CAN wiring fault; unit replaced without programming

Not sure what B10DA 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.