AutoCodesNissan – P1846 Nissan

P1846 Nissan Code - Automatic Transmission Fluid Pressure Switch 6

Quick Answer

The Fail-safe function to detect front brake clutch solenoid valve condition. Common causes include Faulty Automatic Transmission Fluid (ATF) Pressure Switch 6, Automatic Transmission Fluid (ATF) Pressure Switch 6 harness is open or shorted, Automatic Transmission Fluid (ATF) Pressure Switch 6 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
P1846 Nissan indicates Automatic Transmission Fluid Pressure Switch 6.
Common causes
Common causes include Faulty Automatic Transmission Fluid (ATF) Pressure Switch 6, Automatic Transmission Fluid (ATF) Pressure Switch 6 harness is open or shorted, Automatic Transmission Fluid (ATF) Pressure Switch 6 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,446
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 22, 2019
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Code P1846 Nissan Description

The Fail-safe function to detect front brake clutch solenoid valve condition. Diagnostic Trouble Code (DTC) P1846 is detected when Transmission Control Module (TCM) detects that actual gear ratio is normal, and relation between gear position and condition of Automatic Transmission Fluid (ATF) Pressure Switch 6 is irregular during depressing accelerator pedal.
OBDII Code P1846 Nissan - Automatic Transmission Fluid Pressure Switch 6 - AutoCodes.com
P1846 Nissan Code - Automatic Transmission Fluid Pressure Switch 6

What are the Possible Causes of the DTC P1846 Nissan?

  • Faulty Automatic Transmission Fluid (ATF) Pressure Switch 6
  • Automatic Transmission Fluid (ATF) Pressure Switch 6 harness is open or shorted
  • Automatic Transmission Fluid (ATF) Pressure Switch 6 circuit poor electrical connection

How to Fix the DTC P1846 Nissan?

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 P1846 Nissan 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.

Frequently Asked Questions about P1846 Nissan Code

What does OBDII code P1846 mean for a Nissan?

Code P1846 indicates an issue with Automatic Transmission Fluid Pressure Switch 6, which monitors the pressure of the transmission fluid to ensure proper operation.

What are the common symptoms of code P1846 in a Nissan?

Symptoms may include erratic shifting, transmission slipping, delayed gear engagement, or the vehicle entering limp mode.

What causes code P1846 in a Nissan?

Common causes include a faulty pressure switch, wiring or connector issues, low transmission fluid, or internal transmission problems.

Can driving with code P1846 damage the transmission?

Yes, ignoring this code can lead to further transmission damage due to improper fluid pressure regulation.

How do I diagnose code P1846 on a Nissan?

Start by checking the transmission fluid level and condition, inspecting wiring and connectors around the pressure switch, and testing the switch itself with a multimeter.

How can I fix code P1846 on a Nissan?

Repairs may involve replacing the faulty pressure switch, repairing damaged wiring, or addressing internal transmission issues if necessary.

Is code P1846 specific to certain Nissan models?

This code can appear on various Nissan models equipped with automatic transmissions, but check your vehicle’s service manual for model-specific details.

How much does it cost to repair code P1846 on a Nissan?

Repair costs can vary widely, from $100-$300 for a pressure switch replacement to several thousand dollars for significant transmission repairs.

Can low transmission fluid cause code P1846 on a Nissan?

Yes, insufficient or contaminated transmission fluid can lead to improper pressure readings and trigger this code.

Should I reset the code P1846 after repairs?

Yes, after completing repairs, clear the code with an OBDII scanner and test drive the vehicle to ensure the issue is resolved.

Discuss the causes and fixes for P1846 Nissan OBDII Code

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