U0214 fault code: what it means

U0214: Lost communication with the i-stop start stop unit. i-stop disabled.

Network (communication between modules) · Minor

Usual causes, most likely first

1. start stop unit
2. CAN wiring or connector
3. low battery voltage

U0214 by make

Not sure what U0214 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.