U0155 on Audi
Lost Communication with Instrument Cluster
U0155 on Audi vehicles indicates lost communication with instrument cluster. Au7o has documented this code across 1 Audi model — most commonly on Q5 Sportback. This is a network communication code meaning a control module (usually the engine or body computer) has lost communication with the instrument cluster over the vehicle's data bus. Modern vehicles share information between modules over a network (such as CAN), and the cluster both displays data and relays messages. When messages from the cluster stop arriving, this code sets. You may see warning lights, dead or erratic gauges, missing displays, or other modules acting up. It usually points to wiring, power/ground, or the cluster itself rather than the engine. Typical repair costs on Audi range from $300 to $2,500, depending on the specific model and root cause.
Common Causes of U0155
- •Faulty instrument cluster
- •Loss of power or ground to the cluster
- •Damaged or corroded CAN bus wiring
- •Loose or corroded connectors at the cluster
- •Blown fuse feeding the cluster
- •Short or open on the communication bus
- •A different failed module dragging down the bus
U0155 on Audi by Model
Audi Q5 Sportback(1 issue)
- Virtual Cockpit Display Failure and Black Screen2021-2026
The Audi Virtual Cockpit digital instrument cluster can experience intermittent black screens, pixelation, or complete display failure. The NVIDIA Tegra processor overheats or the display connection becomes loose. Some units fail from software corruption during OTA updates. The issue leaves drivers without speedometer, fuel gauge, and warning indicators.
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View U0155 across all makes →Frequently Asked Questions
What does U0155 mean on Audi?▼
U0155 stands for "Lost Communication with Instrument Cluster." This is a network communication code meaning a control module (usually the engine or body computer) has lost communication with the instrument cluster over the vehicle's data bus. Modern vehicles share information between modules over a network (such as CAN), and the cluster both displays data and relays messages. When messages from the cluster stop arriving, this code sets. You may see warning lights, dead or erratic gauges, missing displays, or other modules acting up. It usually points to wiring, power/ground, or the cluster itself rather than the engine. On Audi specifically, this code is documented across 1 model.
What causes U0155 on Audi vehicles?▼
Common causes on Audi: Faulty instrument cluster, Loss of power or ground to the cluster, Damaged or corroded CAN bus wiring, Loose or corroded connectors at the cluster, Blown fuse feeding the cluster. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix U0155 on a Audi?▼
Repair costs on Audi range from $300 to $2,500, depending on the specific model and root cause.
Which Audi models have U0155 documented?▼
Au7o has documented U0155 on 1 Audi model: Q5 Sportback.