FAULT CODE READING

OBD2 codes.

A code identifies a signal or system that needs to be checked, not a part you should replace.

0 code entries · 1 related fault

P0871

There is no code entry for P0871

DQ250 DSG mechatronic and oilDSG gearbox

Engine / equipment: DQ250 6-speed wet-clutch DSG (2.0 TDI, 2.0 TSI and other powerful engines in the Golf, Passat, Tiguan, A3, TT, Octavia, Superb, Leon…)
Period mentioned: 2003–2020
Symptoms: Jerking or shudder when pulling away and at low speed, harsh shifts, gearbox warning or limp mode; codes P17BF, P189C, P0841, P0871 or P0717.
Possible cause described: In most cases the cause is the mechatronic unit (the electro-hydraulic control unit), not the clutches. The oil shares a circuit with the clutches and degrades, carrying debris that damages the valves; the pan can also rust and leak. Volkswagen specifies an oil and filter change every 60,000 km.
Check for the garage: Read codes with ODIS or VCDS, check the oil change history, inspect the pan for rust or leaks and the clutch adaptation values. Replacing the mechatronic control board is often enough.
Cost cited in the source: Oil and filter change: maintenance every 60,000 km; control board or mechatronic: expensive repairA rough figure from the original database, not an up-to-date quote.

Mileage cited in the database: from 60,000 km. This is not a maintenance interval and does not predict a failure.