C1604

ECU

Control unit defective

C1606

ECU software

Control unit not coded

C1620

First setup not completed

Control unit not adjusted

C1522

H/Lamp switch

Light signal line open

C1212

Vehicle speed signal

Speed signal is not plausible

C2226

Output voltage short to Batt/GND

Output signal short to Plus/GND

C1255

Height sensor rear circuit

Leveling unit lever overturned (over 90°)

C1621

Excessive operating temperature

Excessive temperature