P17D0 on 2018-2026 Alfa Romeo Stelvio (Base, Ti, Ti Sport, Veloce, Quadrifoglio) — Transmission Fluid Over-Temperature
1 vehicles · 1 makes · $300-$1,800 repair
Most Reported On
P17D0 is an OBD-II diagnostic trouble code meaning “Transmission Fluid Over-Temperature.” This manufacturer-specific code indicates the transmission control system detected the transmission fluid temperature has exceeded its safe upper limit. The control module monitors fluid temperature with an internal sensor; overheated fluid loses its lubricating and pressure-holding properties and accelerates internal wear. When the temperature climbs beyond the allowed threshold, P17D0 sets, often along with the transmission entering a protective mode to prevent damage. It typically points to a cooling, fluid, or load-related problem rather than a single failed part. This code is most commonly reported on 2018-2026 Alfa Romeo Stelvio (Base, Ti, Ti Sport, Veloce, Quadrifoglio), with repair costs ranging from $300 to $1,800.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P17D0, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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FAQ
What does P17D0 mean?
P17D0 stands for "Transmission Fluid Over-Temperature." This manufacturer-specific code indicates the transmission control system detected the transmission fluid temperature has exceeded its safe upper limit. The control module monitors fluid temperature with an internal sensor; overheated fluid loses its lubricating and pressure-holding properties and accelerates internal wear. When the temperature climbs beyond the allowed threshold, P17D0 sets, often along with the transmission entering a protective mode to prevent damage. It typically points to a cooling, fluid, or load-related problem rather than a single failed part.
What are the most common causes of P17D0?
The most common causes of P17D0 are: Low or degraded transmission fluid, Restricted or failed transmission fluid cooler, Clogged cooler lines or transmission filter, Heavy load, towing, or extended stop-and-go operation, Failing transmission pump or internal slipping generating heat, Faulty transmission fluid temperature sensor, Low engine coolant level (on units cooled by the radiator), Failing cooling fan or radiator airflow restriction. The specific cause varies by vehicle.
How much does it cost to fix P17D0?
Repair costs for P17D0 range from $300 to $1,800, depending on the vehicle and root cause.
Which vehicles are affected by P17D0?
Au7o has documented P17D0 across 1 vehicle models from 1 manufacturers: Alfa Romeo.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.