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Home DTC Codes U0408 Medium · 30min
U0408 Warning

OBD2 Code U0408: Invalid Module Data

Invalid data from a module.

ECU: ECM

Detected Root Component

Network Component

Confidence level: low

Observed Symptoms

  • Loss of communication between modules
  • Dashboard errors

Possible Causes

  • Defective sensor
  • Incorrect module configuration
  • Damaged CAN wiring
  • Damaged wiring
Diagnostic Progress 0 %
Difficulty Medium
Est. time 30min
Tools Required 1 tool(s)

Tools Required

OBD2 scanner

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Diagnostic Result

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Parts likely to be the cause (Moteur (général))

Moteur (général)

Moteur (général)

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Frequently asked questions about code U0408

What does code U0408 mean?

OBD2 Code U0408: Invalid Module Data. Invalid data from a module.

What are the symptoms of code U0408?

Code U0408 may cause: Loss of communication between modules, Dashboard errors. The intensity of these symptoms varies depending on the vehicle and driving conditions.

What causes code U0408?

The most common causes of code U0408 are: Defective sensor, Incorrect module configuration, Damaged CAN wiring, Damaged wiring. A proper OBD2 diagnostic will pinpoint the exact cause.

Is it serious to drive with code U0408?

Code U0408 has moderate severity (Warning). Short-term driving remains possible, but a prompt check is recommended to prevent worsening.

How do I fix code U0408?

Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Defective sensor, Incorrect module configuration, Damaged CAN wiring, Damaged wiring. Difficulty: Medium · Estimated time: 30min.