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P0705 on Audi: Symptoms, Causes & Fix

Transmission Range Sensor Circuit Malfunction (PRNDL Input)

Official technical diagnostic wire for fault code P0705 specifically affecting Audi vehicles (A4, A6, Q5, Q7, A3).

Sensor Voltage Ref
0.1V – 5.0V Ref
Audi Factory Standard
CAN Bus Speed
500 kbps CAN-FD
ISO 15765-4 Diagnostic Bus
Drivability Status
Drivable (Short Trip)
High urgency level
Est. Repair Cost
$120 - $450 (DIY: $40 - $160)
Parts & Labor DIY
Model-Specific Diagnostic Wires

Select Your Audi Model for P0705:

6 Models Available

1. Common Symptoms on Audi Vehicles

When Audi Engine Control Modules (ECM) trigger fault code P0705, drivers typically report:

Check Engine Light on on Audi Powertrains
Vehicle will not crank/start in Park (starts only in Neutral) on Audi Powertrains
Gear indicator on dashboard (P R N D 1 2) is blank or displays wrong gear on Audi Powertrains
Transmission shifts harshly or goes into 3rd gear limp mode on Audi Powertrains
Reverse backup lights fail to illuminate on Audi Powertrains

2. Root Causes on Audi Engines

Historical diagnostic claims across Audi engines point to the following failure distribution:

55%
Misaligned or faulty Transmission Range Sensor / Neutral Safety Switch (NSS) (Audi OEM Part)
25%
Corroded or water-logged connector on transmission side (Audi OEM Part)
12%
Stretched or misadjusted shift linkage cable (Audi OEM Part)
8%
Broken internal switch contacts (Audi OEM Part)

3. Step-by-Step Fix Protocol for Audi

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 Audi engines.

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 Audi engines.

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 Audi engines.

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 Audi engines.

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 Audi engines.

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

Equipment for Diagnosing Audi (P0705)

Prime Fast Delivery & Verified Fitment
Direct-Fit Replacement Part

Audi OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

Direct-fit replacement assembly engineered to OEM tolerances for Audi.

$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 AudiVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
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4. Audi P0705 Frequently Asked Questions

What does code P0705 mean on a Audi?

On Audi vehicles, P0705 indicates that the Engine Control Module (ECM) detected transmission range sensor circuit malfunction (prndl input). This typically points to Misaligned or faulty Transmission Range Sensor / Neutral Safety Switch (NSS) or Corroded or water-logged connector on transmission side.

Can I continue driving my Audi with code P0705?

Caution. Vehicle may not start in Park, backup lights may not work, and transmission may lock in Limp Mode. Because this code carries a High severity rating on Audi powertrains, we recommend scanning live data values promptly to prevent secondary damage.

How much does it cost to fix code P0705 on a Audi?

Estimated DIY parts cost ranges from $120 - $450 (DIY: $40 - $160), while professional shop repairs at an authorized Audi dealership or independent specialist typically range from $180 to $380 including diagnostic labor.