AutoCodes – Cadillac – P0705 Cadillac

P0705 Cadillac Code - Transmission Range Sensor Circuit Malfunction

Quick Answer

The Transaxle on this vehicle has a Park Neutral Position (PNP) and Back-up switch. Common causes include Faulty Park/Neutral Position Switch, Misadjusted Park/Neutral Position Switch, Park/Neutral Position Switch harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0705 Cadillac indicates Transmission Range Sensor Circuit Malfunction.
Common causes: Common causes include Faulty Park/Neutral Position Switch, Misadjusted Park/Neutral Position Switch, Park/Neutral Position Switch harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 4,583

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0705 Cadillac Description

The Transaxle on this vehicle has a Park Neutral Position (PNP) and Back-up switch. This switch incorporates a transaxle range selector switch. There are 4 inputs (PRND A, B, C, P) which are switches to ground. The four switches have an unique switch pattern. The Powertrain Control Module (PCM) uses the combination of the switch patterns in order to determine the gear selected by the driver.
This diagnostic monitors the 4 inputs in order to determine what gearposition the transmission is in. When the PCM detects that an illegal range has occurred, this DTC sets.

OBDII Code P0705 Cadillac - Transmission Range Sensor Circuit Malfunction - AutoCodes.com — P0705 Cadillac Code - Transmission Range Sensor Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0705 Cadillac?

Faulty Park/Neutral Position Switch
Misadjusted Park/Neutral Position Switch
Park/Neutral Position Switch harness is open or shorted
Park/Neutral Position Switch circuit poor electrical connection

How to Fix the DTC P0705 Cadillac?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0705 Cadillac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.