U0431

Invalid Data Received from Body Control Module

Moderate severity

Other modules receive implausible body status data (e.g. all doors reported closed while ajar). Comfort and lighting features can behave inconsistently.

Common causes

BCM software version mismatch
A plausible cause — test and verify before replacing parts.
medium
Typical part cost: $90-880
Gateway module routing CAN messages incorrectly
Less common, but worth ruling out after the more likely causes.
low
Typical part cost: $90-880
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First things to check

1Confirm the code with a scan tool and check for additional related codes.
2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.

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Related codes

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Frequently asked questions

What does U0431 mean?

U0431 means "Invalid Data Received from Body Control Module". It is a generic OBD-II code that points to a fault in the network / communication.

What are the most common causes of U0431?

bcm software version mismatch; gateway module routing can messages incorrectly; can terminating resistor (120 ω) drifted out of spec — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.

Can I keep driving with this code?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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