P17F1: Transmission Gear Engagement Failure
31 vehicles · 9 makes · $100-$9,000 repair
Most Reported On
P17F1 is an OBD-II diagnostic trouble code meaning “Transmission Gear Engagement Failure.” This transmission code sets when the control module determines that the transmission failed to properly engage a commanded gear or clutch, meaning the requested gear was not achieved or could not be confirmed. The computer monitors input and output speeds and clutch/solenoid feedback, and when the expected engagement doesn't happen it flags this fault, often putting the transmission into a protective fail-safe mode. It can cause slipping, no drive, harsh engagement, or failure to move in certain gears. On some CVT-equipped vehicles this code appears after valve body or transmission replacement when the unit's calibration data has not been properly loaded. This code is most commonly reported on 2013-2023 Nissan Altima, 2014-2020 Nissan Rogue, and 2012-2021 Nissan Versa, plus 28 other vehicles, with repair costs ranging from $100 to $9,000.
Common Causes
Typical Repair Cost
Based on 36 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P17F1, 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
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Vehicles Affected (31)
ZF 9-Speed Transmission Rough Shifting, Shudder, and Hesitation (2.0T)
CVT Start Clutch Juddering
CVT Transmission Problems (3rd Gen)
CVT Transmission Shuddering and Judder
CVT Transmission Judder and Failure (Second Gen)
CVT Transmission Failure/Shudder
CVT Transmission Failure/Shudder
CVT Transmission Failure (Jatco CVT7/JF015E)
CVT Transmission Failure (Jatco CVT7/JF015E)
CVT Transmission Failure (Jatco CVT8/JF016E)
CVT Transmission Failure and Shudder
CVT Transmission Shudder and Failure (Jatco CVT8)
CVT Transmission Failure (Jatco CVT7)
CVT Transmission Failure Under Load
CVT Overheating During Highway Driving
Excessive Engine Noise and Vibration (HR16DE)
JATCO CVT judder, shudder, slipping and complete failure
CVT Judder and Hesitation During Acceleration
CVT Transmission Judder, Slipping, and Premature Failure
CVT Transmission Shudder and Premature Failure
CVT Transmission Shudder/Hesitation
CVT Transmission Hesitation and Harsh Engagement
CVT Chain Stretch and Transmission Judder
CVT Transmission Failure
CVT Transmission Failure and Harsh Engagement
FAQ
What does P17F1 mean?
P17F1 stands for "Transmission Gear Engagement Failure." This transmission code sets when the control module determines that the transmission failed to properly engage a commanded gear or clutch, meaning the requested gear was not achieved or could not be confirmed. The computer monitors input and output speeds and clutch/solenoid feedback, and when the expected engagement doesn't happen it flags this fault, often putting the transmission into a protective fail-safe mode. It can cause slipping, no drive, harsh engagement, or failure to move in certain gears. On some CVT-equipped vehicles this code appears after valve body or transmission replacement when the unit's calibration data has not been properly loaded.
What are the most common causes of P17F1?
The most common causes of P17F1 are: Low or contaminated transmission fluid, Worn or failing internal clutches or bands, Faulty shift solenoid or pressure control solenoid, Valve body wear, sticking, or hydraulic leakage, Missing or incorrect calibration data after valve body/transmission service, Internal mechanical wear or damage in the transmission, Wiring or connector fault in the transmission control circuit, Faulty transmission control module. The specific cause varies by vehicle.
How much does it cost to fix P17F1?
Repair costs for P17F1 range from $100 to $9,000, depending on the vehicle and root cause.
Which vehicles are affected by P17F1?
Au7o has documented P17F1 across 31 vehicle models from 9 manufacturers: Dodge, Honda, Hyundai, Jeep, Kia, Nissan, Porsche, Subaru, Toyota.
Sources (12)
- NHTSANHTSA Complaint #11335220
- ForumCVT Chain Snapped Crosstrek - Subaru Crosstrek and XV Forums
- ForumBuying a 2013 Crosstrek XV CVT break - Subaru Crosstrek and XV Forums
- ForumCVT chain broke - Subaru Outback Forums
- mediaSubaru Crosstrek Transmission Problems TR580 - Cherish Your Car
- mediaRohnert Park Transmission: Subaru CVT Transmission Problems Complete Guide
- mediaSuper Rupair: Subaru Lineartronic CVT Common Problems
- mediaMotorverso: Subaru CVT Problems Common Transmission Reliability & Issues
- ForumCVT issue - 5th Gen Subaru Impreza Forum
- mediaSubaru CVT Transmission Reliability Common Issues - Ricks Free Auto
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.