U0422Network Communication

Invalid Data Received From Body Control Module

U0422 means a module received invalid or implausible data from the body control module over the CAN bus. It can stem from a BCM input fault, a software issue, or a wiring problem.

🚗 Not recommended. Invalid data from the BCM can cause widespread electrical faults.

HIGH

severity

🎯 Top Causes, Ranked by Likelihood

#1Underlying BCM input fault$100-$500

40%

A switch or input fault at the BCM produces invalid data.

#2Wiring or connector fault$50-$500

30%

Bus wiring problems corrupt the data being sent.

#3Software or module fault$100-$1200

20%

Outdated software or a failing BCM sends bad data.

🩺 Common Symptoms

Multiple electrical faults
Lights or accessories not working
Warning lights
Other U-codes stored
Erratic behavior

💰 Repair Cost: DIY vs Shop

DIY Cost

$50-$400

Shop Cost

$150-$900

📋 Free OBD2 Code Cheat Sheet

The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.

🔧 How to Diagnose U0422

1Scan the BCM for stored codes first and address them

2Inspect CAN wiring and connectors for faults

3Check BCM inputs and switches

4Verify the BCM software is current

❓ Frequently Asked Questions

Can I drive with U0422?

Not recommended. The BCM controls many systems, so bad data can cause unpredictable faults. Diagnose it first.

What causes U0422?

Often a BCM input fault producing bad data, or wiring issues on the bus.

How is U0422 fixed?

By addressing BCM faults, repairing bus wiring, and updating software so the module sends valid data.

🔗 Related Codes

U0140U0100U0155U0146