What causes P1656 on a Honda?

Open VSA communication line Corroded VSA modulator connector Failing VSA modulator-control unit Low system voltage Aftermarket device on the network

How do I fix P1656 on a Honda?

Remove aftermarket electronics from the network Scan the VSA modulator for its own codes Check network communication health Inspect connectors for corrosion Repair wiring or service the modulator

P1656 VSC Control Module Communication Malfunction (Honda)

Q: What does P1656 mean on a Honda?

P1656. VSC Control Module Communication Malfunction (Honda). Applies to Accord, Odyssey, Pilot with VSA.

Category: Network Communications
Severity: Check Engine Light
Applies to: Accord, Odyssey, Pilot with VSA

This fault is part of the Honda ABS and VSA warning light guide. It covers the system and the order to check it.

What does P1656 mean on a Honda?

P1656. VSC Control Module Communication Malfunction (Honda). This Honda-enhanced code applies to Accord, Odyssey, Pilot with VSA.

Common causes of P1656

Open VSA communication line
Corroded VSA modulator connector
Failing VSA modulator-control unit
Low system voltage
Aftermarket device on the network

How to fix P1656

Remove aftermarket electronics from the network
Scan the VSA modulator for its own codes
Check network communication health
Inspect connectors for corrosion
Repair wiring or service the modulator

Sources and review

Last updated 2026-09-06.