U0155 on Lexus
Lost Communication with Instrument Cluster
U0155 on Lexus vehicles indicates lost communication with instrument cluster. Au7o has documented this code across 1 Lexus model — most commonly on LX. 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.
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 Lexus by Model
Lexus LX(1 issue)
- 12.3-inch Infotainment / Lexus Interface Screen Freezing, Rebooting, or Going Blank2022-2025
Owners of the current-generation LX have reported the center infotainment display freezing, rebooting, losing audio functions, or going black temporarily. Complaints and forum posts describe navigation, camera, and climate-related interface interruptions, sometimes resolved only by an ignition cycle or software update. The problem appears tied to head-unit software instability rather than a single hardware defect in many cases.
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View U0155 across all makes →Frequently Asked Questions
What does U0155 mean on Lexus?▼
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 Lexus specifically, this code is documented across 1 model.
What causes U0155 on Lexus vehicles?▼
Common causes on Lexus: 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 Lexus?▼
Repair costs vary widely depending on the root cause and specific Lexus model.
Which Lexus models have U0155 documented?▼
Au7o has documented U0155 on 1 Lexus model: LX.