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Home >> Audi >> 2001 >> S4 Quattro, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Diagnostic Tests >> DTC 01402: Navigation Data Wire Signal >> Possible Causes & Corrective Action

Possible Causes & Corrective Action

Open circuit in clock, enable or data wire. Repair wiring. See WIRING DIAGRAMS  . Electromagnetic interference. Repair cause of interference. See NAVIGATION SYSTEMS article.