U0155 fault code: what it means

U0155: Lost communication with the instrument cluster. Gauges and warning lights may not show.

Network (communication between modules) · Costly if missed

Usual causes, most likely first

1. instrument cluster power or earth fault
2. damaged CAN wiring or connector
3. faulty instrument cluster

What the repair usually costs

• Instrument cluster repair (sublet to electronics repairer)NZ$470–NZ$1,190 · A$460–A$1,220

Not sure what U0155 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.