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P0908 – Gate Select Position Circuit Intermittent (OBD2)

P0908 means "Gate Select Position Circuit Intermittent". The automated manual gearbox actuators signal briefly drops out or jumps. The fault comes and goes – often with vibration, heat or moisture – so the part may test fine in the workshop.

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P0908 quick summary

Fault codeP0908
MeaningGate Select Position Circuit Intermittent
SystemPowertrain (Engine & Transmission)
VehiclesGeneric OBD2
SeverityHigh
Can I drive?Not recommended. The gearbox may fail to select gears or get stuck in neutral.
Repair cost€50 – €2,000

How automated manual gearboxes select gears

Automated manual gearboxes use electric or hydraulic actuators to select the gate and shift gears; these codes cover gate select and gear shift position sensors, actuators, the shift lock and the adaptive shift (ASM) controls.

An automated manual gearbox is a manual gearbox with actuators instead of a driver. One actuator moves the selector left and right (gate select), another forward and backward (gear shift); position sensors report where the selector is. A clutch actuator operates the clutch.

Codes P0904–P0931 cover the gate select and gear shift position circuits, actuators and the gear shift lock solenoid; P0949–P0959 cover the adaptive shift management (ASM) learning and mode/control circuits.

Typical faults are worn actuators, position sensors out of calibration, low hydraulic fluid, wiring problems and missing adaptations after repairs.

On VAG vehicles (VW, Audi, Škoda, Seat, Cupra), VCDS and older VAG testers can show this code as the five-digit VAG code 17292 (P0908). Both numbers mean the same fault.

Symptoms of P0908

  • Gearbox does not select a gear or stays in neutral
  • Slow or jerky gear changes
  • Gear display flashing
  • Warning messages
  • Engine does not start (not in neutral)

Most common causes of P0908 (most likely first)

Mechanic's Pro Tip

After disconnecting the battery, many automated manual gearboxes need a learning procedure before they shift properly again – check that first if problems start after a battery change.

  1. 1.Loose or corroded connector pin

    Most likely

    Pins that have spread lose contact as the engine vibrates.

  2. 2.Chafed wire that shorts only now and then

    Often where the harness moves with the engine.

  3. 3.Internal intermittent fault in the automated manual gearbox actuators

  4. 4.Worn or faulty gate select or gear shift actuator

  5. 5.Position sensor out of calibration

  6. 6.Low hydraulic fluid or leak (hydraulic systems)

  7. 7.Adaptation not performed after repair or battery work

Step-by-step diagnostic guide

  1. 1

    Read codes and positions

    Read the gearbox codes and watch the gate and shift positions in live data.

  2. 2

    Do a wiggle test

    With the engine running and the automated manual gearbox actuators value in live data, gently move the harness and connector. If the value jumps or the code returns, the fault is in that section. Also check pin tension with a matching terminal.

  3. 3

    Check fluid (hydraulic systems)

    Check the hydraulic fluid level and look for leaks.

  4. 4

    Check actuators

    Run actuator tests and check movement and current draw.

  5. 5

    Check wiring

    Check sensor supplies and signals and actuator wiring.

  6. 6

    Repair and calibrate

    Replace the faulty part and run the gearbox learning procedure (ASM adaptation).

Frequently asked questions

Can I keep driving with P0908?

Not recommended. The gearbox may fail to select gears or get stuck in neutral.

How much does it cost to fix P0908?

Typical repair costs are 50 € – 2000 €, depending on the cause and the vehicle. The most common fixes are: loose or corroded connector pin; chafed wire that shorts only now and then; internal intermittent fault in the automated manual gearbox actuators. Always confirm the cause with the tests above before buying parts.

What is an automated manual gearbox?

A manual gearbox where actuators change gears and operate the clutch automatically.

Why does my car not start after a gearbox fault?

The engine may only start in neutral; if the gearbox cannot confirm neutral, starting is blocked.

What is the difference between P0908 and similar codes?

P0908 belongs to a group of codes for the same component that differ in the type or location of the fault: P0905 – Gate Select Position Circuit Range/Performance; P0906 – Gate Select Position Circuit Low; P0907 – Gate Select Position Circuit High; P0909 – Gate Select Control Error; P0910 – Gate Select Actuator Circuit / Open [left / right motion]; P0911 – Gate Select Actuator Circuit Range/Performance. The tests on this page apply to the whole group; the type of fault tells you where to start.

Related fault codes

This guide is for information only. Working on vehicles can be dangerous — if you are unsure, have the car checked by a qualified mechanic. Values can differ between model years; always check the manufacturer's repair information.