LEMON Manuals
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1987
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Precis Base
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Repair and Diagnosis
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Different car
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Section 11 (Manual Transaxle On-Vehicle Service - Lancer Evolution)
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Diagnosis < S-AWC(Super All Wheel Control) >
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Diagnostic Trouble Code Procedures
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DTC U0401: Engine Data Error
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Probable Causes
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Probable Causes
WARNING:
This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
The CAN bus line is defective.
Engine malfunction
Malfunction of AWC-ECU