U0426Invalid Data Received from Vehicle Immobiliser Control Module
A control module is communicating with the engine ECU but receives data that is implausible or out of range — wrong checksum, value frozen, or value outside expected limits. Typical effects include limp-home and incorrect dashboard readings.
Can I keep driving? With caution
You can drive to the shop, but do not postpone the repair. The problem may worsen and damage other components.
Sistema Afectado
Red CAN · Comunicación entre módulos
Falla de comunicación en la red CAN: pérdida de datos entre las unidades de control (ECU).
Espacio para vendedores de repuestos
Aún no hay un anunciante en este espacio.
Symptoms You Will Notice
What you may observe when this code appears
- Multiple warning lights may illuminate Affected modules may go into limp mode or shut down Specific functions inoperative depending on module Diagnostic tools may show communication faults
Possible Causes
The components or conditions that trigger this code
- 1Immobiliser internal fault CAN corruption causing checksum errors Gateway module routing CAN messages incorrectly
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Difficulty: hard. Estimated time: 1-5 hours. Estimated cost: €100-€
- 2Professional repair recommended
Note: This information is for general reference. For precise diagnostics and safety repairs, always consult a certified mechanic.
Estimated Cost
Approximate range in USD (varies by region and shop)
Communication modules
* Diagnosis only: $50–$150
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