U0146 fault code: what it means

U0146: Lost communication with the gateway module. Several systems can drop out at once.

Network (communication between modules) · Costly if missed

Usual causes, most likely first

1. gateway power or fuse fault
2. water damage to the gateway
3. CAN wiring fault

What the repair usually costs

• Water damage dry-out (carpet lift, dry, sanitise)NZ$460–NZ$1,390 · A$500–A$1,480

Not sure what U0146 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.