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A4 Prestige
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Section 376 (Engine Control System (Diagnostic Codes (P1604-U0293) & Circuit Tests))
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SFI System
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DTC U0293: Lost Communication with HV ECU [08/2013 - ]
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Typical Enabling Conditions
Typical Enabling Conditions
WARNING:
This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
Monitor runs whenever the following DTCs are not stored
None
Both of the following conditions are met
-
Auxiliary battery voltage
10.5 V or higher
Power switch
On (IG)