OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Powertrain generic / SAE

P074D

Unable to Engage Gear 5

The transmission cannot engage gear 1 - typically a failed shift solenoid, clutch pack, or hydraulic supply problem on the gear-1 circuit.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number7 / 4D

Possible causes

  • Gear 5 circuit failed high

Symptoms

  • Check engine or transmission warning light on
  • Harsh, delayed, or missing shifts
  • Possible limp mode (locked in one gear)
  • Slipping or shuddering during gear changes

Inspection / repair

  • Difficulty: hard
  • DIY: shop recommended
  • Estimated cost: 400–3500 €
  • Estimated time: 2–12 h
  • Component: transmission
  • MIL / check engine light

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication