What are the common causes of U0157?

A failed Information Center B unit. Damaged wiring or connector at Information Center B. Water or corrosion in the Information Center B harness. Wrong installation of aftermarket parts. A software fault in Information Center B.

Check power and ground at Information Center B. Inspect the Information Center B wiring and connector. Check for water damage at Information Center B. Remove and refit aftermarket parts on the network. Replace Information Center B if it stays offline. Clear the code and retest.

U0157

Lost Communication With Information Center B

System: Network communication (U code)
Lamp: Check Engine Light
Category: Network Communications

What it means

U0157 means Lost Communication With Information Center B.

Check these first

A failed Information Center B unit
Damaged wiring or connector at Information Center B
Water or corrosion in the Information Center B harness
Wrong installation of aftermarket parts
A software fault in Information Center B

What to do next

Check power and ground at Information Center B
Inspect the Information Center B wiring and connector
Check for water damage at Information Center B
Remove and refit aftermarket parts on the network
Replace Information Center B if it stays offline
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.