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DTC › ZF4 ZF4 / FF003E

ZAE_ERROR; "Central Solenoid Disconnection Unit" of ECU is unable to activate

â–¶ How to fix

Check the TCU;

What you'll see

No driver-visible symptom recorded.

System reaction

Activate "Central Solenoid Disconnection Unit";

Diagnostic depth

Detection

The central switch-off relay is closed and briefly opened again during initialization of the control unit. If the condition does not change, there is a fault.; Only on directly after ignition

Possible cause

Transmission shifts to neutral (gear loss) Retarder is no longer available;

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