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P0705 on Ford F-250 Super Duty

Transmission Range Sensor Circuit Malfunction (PRNDL Input)

Factory diagnostic protocol and troubleshooting wire for fault code P0705 specifically for the Ford F-250 Super Duty (2020–2026, 6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8).

Verified OEM Telemetry & Field Repair Tree
Ford F-250 Super Duty2020–2026
Ford F-250 Super Duty
Truck6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
F-250 Super Duty 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-250 Super Duty Model Year:

1. Symptoms of P0705 on Ford F-250 Super Duty

When the Engine Control Module (ECM/PCM) on your Ford F-250 Super Duty (6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8) logs fault code P0705, drivers commonly observe:

Check Engine Light on on Ford F-250 Super Duty (6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8)
Vehicle will not crank/start in Park (starts only in Neutral) on Ford F-250 Super Duty (6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8)
Gear indicator on dashboard (P R N D 1 2) is blank or displays wrong gear on Ford F-250 Super Duty (6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8)
Transmission shifts harshly or goes into 3rd gear limp mode on Ford F-250 Super Duty (6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8)
Reverse backup lights fail to illuminate on Ford F-250 Super Duty (6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8)
Ford F-250 Super Duty OBD-II Port Location
The 16-pin diagnostic connector is located Driver lower kick panel near emergency brake pedal. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Ford F-250 Super Duty

Historical warranty claims and technical repair bulletins for Ford F-250 Super Duty 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-250 Super Duty.

3. Step-by-Step DIY Repair Guide for Ford F-250 Super Duty

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-250 Super Duty equipped with 6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8.

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-250 Super Duty equipped with 6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8.

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-250 Super Duty equipped with 6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8.

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-250 Super Duty equipped with 6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8.

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-250 Super Duty equipped with 6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8.

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

Equipment for Diagnosing Ford F-250 Super Duty (P0705)

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Ford F-250 Super Duty OEM Replacement Sensor

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Direct-fit replacement assembly engineered to OEM tolerances for Ford F-250 Super Duty.

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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.

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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-250 Super DutyVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
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Other Common Fault Codes on Ford F-250 Super Duty

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Ford F-250 Super Duty:

4. Ford F-250 Super Duty P0705 FAQs

What causes code P0705 to trigger on a Ford F-250 Super Duty?

On the Ford F-250 Super Duty (6.7L Power Stroke V8 Turbo Diesel (500HP / 1,200 lb-ft) / 7.3L Godzilla V8), 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-250 Super Duty?

On the Ford F-250 Super Duty, the 16-pin DLC diagnostic connector is located Driver lower kick panel near emergency brake pedal. 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-250 Super Duty 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.