P0705 on Toyota Prius
Factory diagnostic protocol and troubleshooting wire for fault code P0705 specifically for the Toyota Prius (2020–2026, 2.0L 4-Cyl Hybrid (M20A-FXS 196HP) / Prius Prime PHEV (220HP)).
1. Symptoms of P0705 on Toyota Prius
When the Engine Control Module (ECM/PCM) on your Toyota Prius (2.0L 4-Cyl Hybrid (M20A-FXS 196HP) / Prius Prime PHEV (220HP)) logs fault code P0705, drivers commonly observe:
2. Most Likely Causes on Toyota Prius
Historical warranty claims and technical repair bulletins for Toyota Prius point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Toyota Prius
Move gear selector through all positions while monitoring scan tool TR PID to see which gear positions fail to register. on the Toyota Prius equipped with 2.0L 4-Cyl Hybrid (M20A-FXS 196HP) / Prius Prime PHEV (220HP).
Ensure the mechanical shift linkage fully clicks the transmission lever into the physical detent for Park and Neutral. on the Toyota Prius equipped with 2.0L 4-Cyl Hybrid (M20A-FXS 196HP) / Prius Prime PHEV (220HP).
Use multimeter to check continuity across switch pins in Park, Reverse, Neutral, and Drive. on the Toyota Prius equipped with 2.0L 4-Cyl Hybrid (M20A-FXS 196HP) / Prius Prime PHEV (220HP).
Loosen mounting bolts, use alignment pin to align sensor slot with transmission shaft in Neutral, torque bolts, or install new OEM sensor. on the Toyota Prius equipped with 2.0L 4-Cyl Hybrid (M20A-FXS 196HP) / Prius Prime PHEV (220HP).
Clear DTCs and confirm engine starts in Park and Neutral, reverse lights activate, and gear display is accurate. on the Toyota Prius equipped with 2.0L 4-Cyl Hybrid (M20A-FXS 196HP) / Prius Prime PHEV (220HP).
Equipment for Diagnosing Toyota Prius (P0705)
Toyota Prius OEM Replacement Sensor
Direct-fit replacement assembly engineered to OEM tolerances for Toyota Prius.
AstroAI Auto-Ranging Digital Multimeter
Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.
BlueDriver Bluetooth Pro OBDII Scan Tool
Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.
Other Common Fault Codes on Toyota Prius
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Toyota Prius:
4. Toyota Prius P0705 FAQs
What causes code P0705 to trigger on a Toyota Prius?
On the Toyota Prius (2.0L 4-Cyl Hybrid (M20A-FXS 196HP) / Prius Prime PHEV (220HP)), P0705 is most frequently caused by Misaligned or faulty Transmission Range Sensor / Neutral Safety Switch (NSS) or Corroded or water-logged connector on transmission side.
Where is the OBD-II port located on my Toyota Prius?
On the Toyota Prius, the 16-pin DLC diagnostic connector is located Under driver side dashboard near A-pillar trim. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my Toyota Prius with code P0705?
Caution. Vehicle may not start in Park, backup lights may not work, and transmission may lock in Limp Mode. Given that P0705 carries a High severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.