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Automatic gearbox control unit repair NAG2 (722.9) — main photo

NAG2 (722.9) gearbox control unit — 7G-TRONIC family

This page lists the fault codes we repair, photos of the control unit and photos of the units we have already repaired.

Fault codes we repair:

0717 The signal from component Y3 / 8n1 (turbine speed sensor (VGS)) is not available.
0718 Component Y3 / 8n1 (turbine speed sensor (VGS)) is faulty
2767 The signal from component Y3 / 8n2 (internal speed sensor (VGS)) is not available.
2768 Component Y3 / 8n2 (internal speed sensor (VGS)) is faulty
2204 The signal from component Y3 / 8n1 (turbine speed sensor (VGS)) is not available.
2205 Component Y3 / 8n1 (turbine speed sensor (VGS)) is faulty
2200 The signal from component Y3 / 8n2 (internal speed sensor (VGS)) is not available.
2201 Component Y3 / 8n2 (internal speed sensor (VGS)) is faulty.
0642 The speed sensor supply voltage is faulty. (Low voltage)
Implausible speed signal from the sensor – signal disturbed.

Controller photos:

automatic gearbox controller repair automatic gearbox control unit NAG2 (722.9) 7G-TRONIC – photo 1