Powertrain, generic · Transmission
P081E Excessive Clutch B Slippage
Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible
P081E is the counterpart to P0811 for clutch B – on a dual-clutch gearbox clutch 2 with the even gears and reverse, which Audi calls 'clutch 2'. The module compares engine speed with the input shaft speed of the closed clutch and flags slip above its limit. Audi's DL382 S tronic (2020–24) sets it intermittently with P0811 and input speed codes; the bulletins report a transmission malfunction and 'reverse gear unavailable', and the fix was a new transmission module with improved parts from late 2023. A failed clutch 2 typically means no reverse and no even gears.
Likely causes
Transmission module speed capture faulty
Clutch 2 worn or overheated
Fluid or pressure
Input speed sensor B faulty
Symptoms
- Transmission warning, limp mode
- Reverse or even gears not available
- Engine flares on gear changes
Repair estimate
DifficultyHardWorkshop job
Parts and labour€400–3,500
Time1–8 h
Typical range across vehicles; the real cost depends on what the testing finds.
Parts involved
transmission clutchestransmission control moduleinput speed sensortransmission fluid
Related codes
References: static.nhtsa.gov, static.nhtsa.gov, law.cornell.edu.