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2007 MERCEDES-BENZ S65 AMG
6.0L V12 BiTurbo M275•RWD•AUTOMATIC•gas•M275•turbo
🏆Sponsored by Chris H· Danville, IN
Repairs424Labor488Torque3420Fluid8DTC1785Battery2Maintenance0Recalls0
P0781moderate severityPowertrain

1-2 Shift Malfunction

on 2007 Mercedes-Benz S65 AMG 6.0L V12 BiTurbo M275 · RWD

What this code means

A problem was detected during the 1-2 gear shift. The transmission may not shift properly from first to second gear.

Symptoms

  • Delayed 1-2 shift
  • Harsh or slipping shift
  • Reduced acceleration

Common causes

  • Faulty 1-2 shift solenoid
  • Low transmission fluid
  • Dirty fluid or clogged valve body
  • Internal clutch wear

Diagnostic steps

  1. Check fluid level and condition
  2. Scan for related codes
  3. Test shift solenoid operation
  4. Inspect valve body and clutches
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