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P1846 Infiniti Code - Automatic Transmission Fluid Pressure Switch 6

Quick Answer

The P1846 Infiniti code refers to an issue with the Automatic Transmission Fluid Pressure Switch 6. Common causes include Faulty Automatic Transmission Fluid Pressure Switch 6, Low transmission fluid levels, Contaminated transmission fluid. 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 Infiniti indicates Automatic Transmission Fluid Pressure Switch 6.
Common causes
Common causes include Faulty Automatic Transmission Fluid Pressure Switch 6, Low transmission fluid levels, Contaminated transmission fluid.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P1846 Infiniti Description

The P1846 Infiniti code refers to an issue with the Automatic Transmission Fluid Pressure Switch 6. This switch is responsible for monitoring the fluid pressure within the transmission system and sending signals to the vehicle's computer to ensure smooth shifting and optimal performance. When this switch malfunctions or fails, it can lead to a variety of transmission-related problems that can affect the vehicle's overall performance.

OBDII Code P1846 Infiniti - Automatic Transmission Fluid Pressure Switch 6
P1846 Infiniti Code - Automatic Transmission Fluid Pressure Switch 6

Common Causes of P1846 Infiniti

  1. Faulty Automatic Transmission Fluid Pressure Switch 6
  2. Low transmission fluid levels
  3. Contaminated transmission fluid
  4. Wiring or electrical issues
  5. Internal transmission problems

Symptoms of P1846 Infiniti

  1. Harsh shifting between gears
  2. Delayed shifting or difficulty getting into gear
  3. Transmission slipping
  4. Transmission not shifting at all
  5. Decreased fuel efficiency

How to Fix P1846 Infiniti

  1. Begin by diagnosing the specific cause of the issue, which may involve testing the Automatic Transmission Fluid Pressure Switch 6, checking transmission fluid levels, and inspecting the wiring and electrical connections.
  2. If the pressure switch is faulty, it will need to be replaced with a new one. This may involve draining the transmission fluid and removing the transmission pan to access the switch.
  3. Inspect the transmission fluid for any signs of contamination and replace it if necessary.
  4. Check and repair any damaged wiring or electrical connections related to the pressure switch.
  5. Test drive the vehicle to ensure that the issue has been resolved and that the transmission is functioning properly.

Cost to Fix P1846 Infiniti

The cost of repairing the Automatic Transmission Fluid Pressure Switch 6 can vary depending on the make and model of the vehicle, the location of the repair shop, and the extent of the damage. On average, the cost of replacing the pressure switch and addressing any related issues can range from $200 to $500, including parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

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Information for Specific Infiniti Models

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 Infiniti Code

1. What does OBDII code P1846 mean for an Infiniti?

Code P1846 indicates a malfunction in Automatic Transmission Fluid Pressure Switch 6, which monitors and regulates the transmission fluid pressure for proper operation.

2. What are the common symptoms of code P1846 on an Infiniti?

Symptoms may include harsh or erratic shifting, delayed gear engagement, transmission slipping, or the illumination of the check engine light.

3. What causes the P1846 code to appear on an Infiniti?

Common causes include a faulty pressure switch, damaged wiring or connectors, low or dirty transmission fluid, or internal transmission issues.

4. Can low transmission fluid trigger the P1846 code?

Yes, insufficient or contaminated transmission fluid can affect pressure readings and trigger this code.

5. How do I diagnose the P1846 code on my Infiniti?

Inspect the wiring and connectors around the pressure switch, check the transmission fluid level and condition, and test the pressure switch for proper operation using a multimeter.

6. Can I drive my Infiniti with the P1846 code?

Driving with this code is not recommended, as it may lead to further transmission damage or unsafe driving conditions due to erratic shifting.

7. How do I fix the P1846 code on an Infiniti?

Repairs may include replacing the faulty pressure switch, repairing damaged wiring, cleaning or replacing transmission fluid, or addressing internal transmission issues.

8. Is replacing the transmission fluid a possible solution for the P1846 code?

Yes, if the fluid is dirty or low, replacing or replenishing it may resolve the issue. However, further diagnosis is recommended to rule out other problems.

9. What tools are needed to troubleshoot the P1846 code?

You may need an OBDII scanner, a multimeter, and basic hand tools to inspect wiring and test the pressure switch.

10. How much does it cost to repair the P1846 code on an Infiniti?

The cost varies depending on the issue, ranging from $100–$300 for pressure switch replacement to $1,000 or more for extensive transmission repairs.

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