U0156

Lost Communication With Information Center A

Q: Can I just clear U0156?

You can clear it, but if the module is still offline the code returns as soon as the network looks for it. Fix the power, wiring, or module first.

Communication network Generic OBD-II Low

What it means

U0156 means the vehicle's network has stopped receiving expected messages from the driver information center. That module drives the message/information display that shows warnings, trip data, and menus. The information/message center goes blank or stops updating, but driving is unaffected.

Low

Can I keep driving? Yes — the vehicle drives normally. You mainly lose the information display and its messages, so watch your gauges directly.

Real-world scan data

Seen in

184

scans in the past year

Found in

<0.1%

of scans

0.1%

of scans that found faults

Appears alongside · share of U0156 scans

B1322in 45.1% of scans

U0141in 44.6% of scans

B1A28in 44.0% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Warning light or message related to the affected system
The driver information center's features stop working or work intermittently
Stored 'lost communication' code in the module that reports the fault
Driver information / message center blank or frozen
Warnings and trip data no longer displayed

Common causes

Most likely first

Power or ground fault feeding the driver information centerLikely
Damaged wiring or a loose/corroded connector at the driver information centerCommon
Break in the CAN/bus wiring between the module and the rest of the networkCommon
The driver information center itself has failed internallyLess often
Low battery voltage or a recent battery disconnect knocking modules off the busLess often

How to diagnose & fix

Work through it in order

Check battery voltage and charge; a weak battery or recent disconnect is a common, easy cause.
Scan all modules and confirm whether only the driver information center is missing or several are — that narrows wiring vs. module.
Verify power and ground at the driver information center's connector.
Inspect the connector and harness to the driver information center for damage, corrosion, or backed-out pins.
Check for a manufacturer software update or reflash; if wiring and power are good, replace the failed module. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with U0156?+

Yes — the vehicle drives normally. You mainly lose the information display and its messages, so watch your gauges directly.

Can I just clear U0156?+

You can clear it, but if the module is still offline the code returns as soon as the network looks for it. Fix the power, wiring, or module first.

Read & clear U0156 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX