U0155 — Lost Communication With Instrument Panel Cluster

U0155 means modules can't communicate with the instrument cluster. Gauges and warning lights become unreliable, so treat any other dash indication as suspect.

Cost range: $100–$1,200. Severity: medium. Safe to drive? With caution — you may not receive genuine warnings from other systems.

Most common causes of U0155

1. Cluster power or ground fault — Check fuses feeding the cluster first. ($20–$200)
2. CAN bus wiring fault behind the dash — Often follows aftermarket stereo or accessory installs. ($150–$600)
3. Low battery voltage — Causes intermittent bus dropouts. ($150–$400)
4. Failed instrument cluster — Usually requires programming with mileage transfer. ($500–$1,200)

Symptoms drivers report with U0155

• Gauges drop to zero
• Dash lights flicker
• Multiple U-codes stored
• Intermittent warning lights