P0716 on Mercedes-Benz: How to Diagnose & Fix
Input/Turbine Speed Sensor "A" Circuit Range/Performance
1 Mercedes-Benz model · 1 documented issue · 1 critical · $5,000-$15,000 repair
P0716 on Mercedes-Benz by model: symptoms, diagnosis and fix
The C190/R190 two-door AMG GT does not use a torque-converter automatic. It uses a rear-mounted Getrag/Magna 7DCL750 seven-speed dual-clutch transaxle — the same family as the Ford GT unit — and it is the single most expensive failure point on the car. Owner and specialist reports converge on a consistent set of failure modes: clutch pack wear producing shudder or hesitation on take-up, internal speed sensor failures throwing transmission control faults, oil weeping from the transaxle case weep holes, and seal/gasket leaks. Forum threads document malfunction codes tied to the electronic transmission control and DCT-specific CCP and SAP faults. The unit is intolerant of missed service: it demands strict fluid intervals and Mercedes-approved fluid, and abnormal vibration or slow engagement is the documented early warning that the gearbox is going. Because the transaxle sits at the rear of a torque tube, access is poor and labor is heavy. This is entirely distinct from the X290 four-door's front-mounted 9-speed AMG SPEEDSHIFT TCT.
Common Symptoms
- Shudder or judder when pulling away from a stop
- Slow or hesitant gear engagement
- Transmission malfunction warning message
- Unusual vibration through the drivetrain
- Oil weeping from the transaxle case
- Harsh or missed shifts
How to Fix
Keep the 7DCL750 service current and investigate take-up shudder immediately. The service kit is appropriate for scheduled/overdue maintenance; a unit with clutch, speed-sensor, seal or pressure faults needs a transmission specialist and may require a rebuild.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Motul Mercedes 700.4 DCT transmission service kit$336
Approved for maintenance only, not as a cure for confirmed clutch-pack, sensor or internal transaxle damage.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (3)
P0716 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0716 mean on a Mercedes-Benz?
P0716 stands for "Input/Turbine Speed Sensor "A" Circuit Range/Performance." This code means the input/turbine speed sensor is producing a reading that is out of the expected range or is inconsistent with other data. This sensor tells the transmission control module how fast the transmission input shaft (turbine) is turning, which is used to calculate gear ratios and time shifts. An erratic or out-of-range signal can cause harsh shifting, incorrect shift timing, or the transmission entering limp mode. It is often caused by sensor, wiring, or fluid issues. On Mercedes-Benz it is documented across 1 model: AMG GT.
What are the most common causes of P0716?
The most common causes of P0716 are: Faulty input/turbine speed sensor, Low or dirty transmission fluid, Damaged sensor wiring or connector, Metal debris on the sensor tip, Internal transmission wear affecting the signal, Faulty transmission control module. The specific cause varies by vehicle.
How much does it cost to fix P0716 on a Mercedes-Benz?
Published repair estimates on Mercedes-Benz range from $5,000 to $15,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0716 on a different make?
View P0716 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.