MazicBay Diagnostics
MAZICBAYDiagnostics
FTC Reader Disclosure: When you purchase or register through links on our site, we may earn an affiliate commission at no extra cost to you. Read our Editorial & Advertising Policy.

P0705 on Ford F-150

Transmission Range Sensor Circuit Malfunction (PRNDL Input)

Factory diagnostic protocol and troubleshooting wire for fault code P0705 specifically for the Ford F-150 (2020–2026, 3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid).

Verified OEM Telemetry & Field Repair Tree
Ford F-1502020–2026
Ford F-150
Truck3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
F-150 SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Drivable (Short Trip)
High urgency level
Est. Repair Cost
$120 - $450 (DIY: $40 - $160)
Parts & Labor DIY
Check P0705 On Another Ford Model:
Diagnose P0705 on Specific F-150 Model Year:

1. Symptoms of P0705 on Ford F-150

When the Engine Control Module (ECM/PCM) on your Ford F-150 (3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid) logs fault code P0705, drivers commonly observe:

Check Engine Light on on Ford F-150 (3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid)
Vehicle will not crank/start in Park (starts only in Neutral) on Ford F-150 (3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid)
Gear indicator on dashboard (P R N D 1 2) is blank or displays wrong gear on Ford F-150 (3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid)
Transmission shifts harshly or goes into 3rd gear limp mode on Ford F-150 (3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid)
Reverse backup lights fail to illuminate on Ford F-150 (3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid)
Ford F-150 OBD-II Port Location
The 16-pin diagnostic connector is located Under driver side dash panel, right of hood release lever. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Ford F-150

Historical warranty claims and technical repair bulletins for Ford F-150 point to the following failure distribution:

55%
Misaligned or faulty Transmission Range Sensor / Neutral Safety Switch (NSS) (Ford OEM Part)
25%
Corroded or water-logged connector on transmission side (Ford OEM Part)
12%
Stretched or misadjusted shift linkage cable (Ford OEM Part)
8%
Broken internal switch contacts (Ford OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Ford F-150.

3. Step-by-Step DIY Repair Guide for Ford F-150

01
Check PRNDL Live Data

Move gear selector through all positions while monitoring scan tool TR PID to see which gear positions fail to register. on the Ford F-150 equipped with 3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid.

Required Tool: OBD-II Scanner
02
Inspect Shift Cable Alignment

Ensure the mechanical shift linkage fully clicks the transmission lever into the physical detent for Park and Neutral. on the Ford F-150 equipped with 3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid.

Required Tool: Pliers, Socket Set
03
Test Neutral Safety Switch Continuity

Use multimeter to check continuity across switch pins in Park, Reverse, Neutral, and Drive. on the Ford F-150 equipped with 3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid.

Required Tool: Digital Multimeter
04
Replace or Re-align Range Sensor

Loosen mounting bolts, use alignment pin to align sensor slot with transmission shaft in Neutral, torque bolts, or install new OEM sensor. on the Ford F-150 equipped with 3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid.

Required Tool: 10mm/12mm Sockets, Alignment Pin
05
Clear Trouble Codes and Verify Starting

Clear DTCs and confirm engine starts in Park and Neutral, reverse lights activate, and gear display is accurate. on the Ford F-150 equipped with 3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid.

Required Tool: OBD-II Scanner
Recommended Parts & Testing Tools

Equipment for Diagnosing Ford F-150 (P0705)

Prime Fast Delivery & Verified Fitment
Direct-Fit Replacement Part

Ford F-150 OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

Direct-fit replacement assembly engineered to OEM tolerances for Ford F-150.

$45 – $95 Prime
Check Fitment on Amazon
Sensor Signal Voltage Meter

AstroAI Auto-Ranging Digital Multimeter

4.6 / 5.0 (Best Seller)

Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.

$29.99 Prime
View on Amazon
Top Mobile OBD-II Scanner

BlueDriver Bluetooth Pro OBDII Scan Tool

4.7 / 5.0 (50,000+ Reviews)

Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.

Compare OEM & Aftermarket Replacement Sensors for Ford F-150Verified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
Find Parts on Amazon
* As an Amazon Associate, MazicBay earns from qualifying purchases. Prices & availability subject to change.

Other Common Fault Codes on Ford F-150

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Ford F-150:

4. Ford F-150 P0705 FAQs

What causes code P0705 to trigger on a Ford F-150?

On the Ford F-150 (3.5L / 2.7L EcoBoost Twin-Turbo V6 / 5.0L Coyote V8 / 3.5L PowerBoost Hybrid), 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 Ford F-150?

On the Ford F-150, the 16-pin DLC diagnostic connector is located Under driver side dash panel, right of hood release lever. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Ford F-150 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.