P1769

P1769 on Peugeot — Transmission intermittently stuck in one gear with a warning to check the transmission

All the fault codes

Code P1769 reports a torque transmission modulation fault in the automated manual transmission. On the Peugeot Bipper 1.4 HDI it shows up as the transmission intermittently sticking in one gear, caused by insufficient pressure in the hydraulic circuit.

System
Transmission
Component
Automated manual transmission oil reservoir
Fault
The transmission intermittently fails to complete a gear change and sticks in one gear, with a message on the display to check the transmission.
Typical symptoms
  • The transmission fails to complete a gear change and sticks in one gear
  • A message on the display to check the transmission
  • Red transmission fault light flashing on the instrument cluster
  • The fault occurs intermittently
Vehicles affected
  • Peugeot Bipper (A9) 1.4 HDI 8v with 5-speed automated manual transmission
Main code
  • P1769 AG4 torque transmission, modulation fault
Solution

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