U0156
Lost Communication With Information Center A
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.
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.
Related codes
Often seen with U0156
Read & clear U0156 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX