What is the information center / display module?

It's the screen that shows driver information — trip computer data, fuel economy, warning messages, and vehicle settings menus — often in the instrument cluster or center stack. On a modern car it's a networked module that trades data with other controllers, which is why losing communication with it sets U0156.

Is it safe to drive with U0156?

Generally yes. The display has nothing to do with the engine, transmission, or brakes, so the car starts and drives normally. The catch is that some warning messages and indicators are shown through this screen, so with it dark you might miss a real alert from another system. That's a reason to fix it rather than ignore it, even though it isn't an emergency.

Why is my screen dark or rebooting?

Most often a power, ground, or communication problem at the module — a blown fuse, a corroded ground, a bad connector, or damaged bus wiring. A failing module itself can also cause it. Because the screen depends on both its own power and a working network connection, either kind of fault can leave it dark, frozen, or stuck rebooting.

Can I fix this myself?

Some of it. Checking the relevant fuse, reseating the module connector, and inspecting for recently disturbed wiring are reasonable DIY steps. It becomes professional work when the module needs to be replaced and configured to the vehicle, which usually requires a manufacturer-level tool. Start with fuses, grounds, and connectors before going further.

OBD-II trouble code

U0156: Lost Communication with Information Center / Display Module

A module on the network can no longer hear from the driver information center or display module — the screen that shows trip data, warnings, and settings. Usually a power, ground, fuse, wiring, or connector fault.

Quick facts

System: Network
Category: Network Communication
Severity: Low severity
Drivable: Usually safe to drive short-term
Repair cost range: $80 – $900
DIY difficulty: Intermediate DIY

What does U0156 mean?

U0156 is set when another module on the vehicle's communication network stops receiving messages from the information center, sometimes called the driver information center (DIC) or display control module. This is the screen — often in the instrument cluster or center stack — that shows trip computer data, fuel economy, warning messages, vehicle settings menus, and on many vehicles audio and phone information. It's a networked module, so it constantly trades data with other controllers. When the network loses contact with it, the monitoring module logs U0156.

The causes follow the standard communication-code pattern. The display module may have lost power or ground through a blown fuse, a corroded ground, or a wiring fault. Its connector may be corroded, loose, or have a backed-out terminal. The CAN or bus wiring to the module may be chafed, broken, or shorted. The module itself can fail internally, and on a shared bus another module can disrupt communication for everyone — so it's worth confirming whether the display module is truly the only one missing or part of a wider bus problem.

The symptoms are usually limited to the information display: a dark, frozen, or rebooting screen, missing trip or warning information, settings menus that won't open, or messages that don't update. The vehicle starts and drives normally because the display has nothing to do with propulsion, which is why U0156 is a low-severity, driveable fault. The one caution is that some warning messages and indicators are presented through this screen, so losing it can mean missing a real alert from another system — a reason to fix it rather than ignore it.

Common causes

Blown fuse feeding the information center / display module
Corroded or loose ground at the display module
Corroded, loose, or backed-out terminal at the module connector
Chafed, broken, or shorted CAN/bus wiring to the display
Failed information center / display module
Harness disturbed during dash or cluster work
Water intrusion in a connector or harness
Another module on the bus disrupting network communication

Symptoms

Dark, frozen, or rebooting information display
Missing trip computer, fuel economy, or settings information
Warning messages not displaying or not updating
Settings menus that won't open or respond
Scan tool cannot communicate with the display module
Other systems may show warnings because their messages aren't being displayed
Vehicle starts and drives normally

Diagnostic steps

1.Scan all modules and confirm the information center / display module is the unreachable one while others respond — if several modules are missing, suspect the bus itself.
2.Check the fuse feeding the display module and verify its power and ground.
3.Inspect the module connector for corrosion, looseness, and backed-out terminals.
4.Inspect the CAN/bus wiring to the module for chafing, breaks, and shorts, especially near the dash and cluster.
5.Measure the communication circuit at the module connector and verify continuity to the bus.
6.If power, ground, and wiring are good but the module still won't communicate, replace and configure it per the manufacturer procedure.

Repair cost

$80 – $900

A blown fuse, corroded ground, or connector repair is the cheapest fix at $80-$250 plus $120-$250 diagnostic time. Repairing wiring runs $150-$450. Replacing the information center / display module runs $250-$900+ including any programming or configuration; factory display modules can be costly and usually require setup to the vehicle.

Estimate your repair

Run the numbers for your vehicle

Open the Repair Cost Estimator with module communication / can bus diagnosis preselected. Adjust labor rate and vehicle category to fit your situation.

Estimate your repair cost

DIY vs shop

This is an intermediate DIY job. It usually involves diagnostic steps, specialty parts, and some careful work in tight spaces. If you have the tools and a service manual or trustworthy video for your specific vehicle, it is achievable in a weekend. Otherwise, a competent independent shop will be faster.

Related codes

U0155 U0146 U0140 U0184 U0164