AutoCodes – Subaru – P1590 Subaru

P1590 Subaru Code - Neutral Position Switch Circuit High Input

Quick Answer

P1590 Subaru indicates Neutral Position Switch Circuit High Input. Common causes include Faulty Neutral Position Switch, Neutral Position Switch harness is open or shorted, Neutral Position Switch circuit poor electrical connection. 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: P1590 Subaru indicates Neutral Position Switch Circuit High Input.
Common causes: Common causes include Faulty Neutral Position Switch, Neutral Position Switch harness is open or shorted, Neutral Position Switch circuit poor electrical connection.
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 13,196

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 May 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1590 Subaru Description

OBDII Code P1590 Subaru - Neutral Position Switch Circuit High Input - AutoCodes.com — P1590 Subaru Code - Neutral Position Switch Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P1590 Subaru?

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

How to Fix the DTC P1590 Subaru?

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 P1590 Subaru 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.

Need more information about the P1590 Subaru code?

Need more information on how to fix the P1590 Subaru code? Get Access to Factory Service Manuals

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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.

Frequently Asked Questions about P1590 Subaru Code

1. What are the common symptoms of OBDII code P1590 in a Subaru related to the Neutral Position Switch Circuit High Input?

- Common symptoms include issues with starting the vehicle, difficulty shifting gears, and the inability to engage the transmission into the correct gear.

2. What can cause the Neutral Position Switch Circuit High Input code P1590 in a Subaru?

- The code can be triggered by a faulty neutral position switch, damaged wiring in the circuit, or a malfunctioning transmission control module.

3. How can I diagnose the cause of OBDII code P1590 in my Subaru?

- Use a diagnostic scanner to read the code and perform a visual inspection of the neutral position switch and its wiring. Testing the switch's functionality and checking for any damaged wires can help pinpoint the issue.

4. Can I continue driving my Subaru with OBDII code P1590 active?

- It is not recommended to drive the vehicle with this code active, as it can lead to safety issues due to potential transmission problems. It's best to address the issue promptly.

5. How can I repair OBDII code P1590 related to the Neutral Position Switch Circuit High Input in my Subaru?

- Repair options include replacing the faulty neutral position switch, repairing any damaged wiring in the circuit, or reprogramming the transmission control module if necessary.

6. Are there any DIY tips for troubleshooting OBDII code P1590 in a Subaru?

- DIY tips include checking for loose or damaged wiring around the neutral position switch, ensuring proper connection of the switch, and consulting the vehicle's repair manual for specific troubleshooting steps.

7. How much does it cost to fix OBDII code P1590 in a Subaru at a repair shop?

- The cost of fixing this code can vary depending on the exact cause of the issue, but it typically ranges from $100 to $300 for parts and labor.

8. Can a malfunctioning neutral position switch cause other problems in my Subaru?

- Yes, a faulty neutral position switch can cause other transmission-related issues such as incorrect gear selection, harsh shifting, or even failure to start the vehicle.

9. Will resetting the OBDII code P1590 in my Subaru make the issue go away?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, it is likely to reoccur.

10. How long does it take to repair OBDII code P1590 related to the Neutral Position Switch Circuit High Input in a Subaru?

- The repair time can vary depending on the exact cause of the issue and the complexity of the repair, but it typically takes 1-2 hours at a repair shop.