Our PDK Distance/Speed Sensor for Porsche 911, Boxster/Cayman (7DT45 & 7DT70) can solve P1731–P1738 and related PDK faults without gearbox replacement. 3-year warranty.
Developed and manufactured by BOTONG AUTO ELECTRONICS, with over 30 years of experience in automotive electronics and transmission repair, this is a brand-new component-level repair solution, not refurbished or salvaged.
This OEM-style PDK distance / shift fork position/ speed sensor restores accurate shift fork position feedback to the transmission control unit (TCU), ensuring correct gear recognition and shift execution without replacing the complete gearbox.
Key Features:
OEM-style LVDT technology (not Hall-based)
True physical linearity, no software compensation
High-temperature stability and long-term reliability
Upgraded heat-resistant nylon housing reduces influence on the inductive coil
Integrated distance + speed sensor
No coding or cloning required – plug-and-play replacement
Supports PIWIS Tester 3 calibration
3-Year Warranty
Typical Fault Symptoms:
“Gearbox fault” warning message
Limp mode or vehicle undrivable
Stuck in gear
No drive after stopping
OBD Fault Codes & Diagnosis:
Distance / Displacement Sensors
P1731, P1732, P1733, P1734, P1735, P1736, P1737, P1738: Shift Rod Displacement Sensor – Electrical Malfunction / Implausible Signal
P1764: Distance / Gear Position Sensor – Implausible Signal (Clutch 1)
P1773: Distance / Gear Position Sensor – Implausible Signal (Clutch 2)
P1765: Distance / Gear Position Sensor – Electrical Fault (Clutch 1)
P1774: Distance / Gear Position Sensor – Electrical Fault (Clutch 2)
P073D: Unable to Engage Gear (Resulting Fault)
Speed Sensors
P173D: Speed Sensor Clutch 1 – Short to B+
P173E: Speed Sensor Clutch 2 – Short to B+
P1744: Transmission Input Shaft Speed Sensor – Plausibility Check (Clutch 2)
P1745: Input Shaft 1 or 2 Overspeed
Ratio Monitoring / Resulting Faults
P0730: Incorrect Gear Ratio – TG1/TG2
P0731: Incorrect Gear Ratio – Gear Train 1
P0732: Incorrect Gear Ratio – Gear Train 2
Applications:
Porsche 911 (997, 991, 992, GT3, GT3 RS)
Porsche Boxster / Cayman (987, 981, 718, 982)
Porsche Macan with 7-speed PDK transmission
PDK gearboxes: 7DT45 & 7DT70
Replaces Porsche Part Numbers:
0501325775
0501327105
0501324703
Why buy from us?
Our LVDT (Porsche OEM ) VS Hall-based Solution (Commonly found on the market)
Uses the same LVDT (Linear Variable Differential Transformer) technology as Porsche OEM, rather than Hall-based solutions that rely on algorithmic linearity compensation
True physical linearity determined by sensor structure, not software correction (Hall sensors need software to achieve linearity)
High-temperature stability and long-term signal consistency (Hall sensors are more affected by temperature and aging)
No reliance on complex algorithms, ensuring predictable and stable output (Hall sensors rely on algorithmic compensation)
Automatically adapts to gearbox wear, further improving stability (Hall sensors cannot adapt)
Optimized for closed-loop precision control of PDK clutch and shift fork positions (Hall sensors are less precise and less predictable for closed-loop control)
Why we use Heat Resistant Nylon material?
Many customers may wonder why we use a heat-resistant nylon material instead of the typical metal material used in most market alternatives. We use specific PA66-30 heat-resistant nylon, an upgraded technology that reduces the influence of traditional metal housings on the inductive coil, further enhancing stability, precision, and durability.
Important Reminder!
When installing the shift displacement sensor, ensure the shift fork is set to the Neutral (N) position.
PDK Distance Sensor 7DT45 7DT70 - Porsche 911, Boxster/Cayman
Brand New
