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P1843 2006 Infiniti G35 Code - Automatic Transmission Fluid Pressure Switch 3

Quick Answer

The P1843 code for a 2006 Infiniti G35 specifically refers to an issue with the Automatic Transmission Fluid Pressure Switch 3. Common causes include Electrical faults in the pressure switch, Wiring issues, Faulty transmission control module (TCM). 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
P1843 2006 Infiniti G35 indicates Automatic Transmission Fluid Pressure Switch 3.
Common causes
Common causes include Electrical faults in the pressure switch, Wiring issues, Faulty transmission control module (TCM).
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 17, 2024
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Code P1843 2006 Infiniti G35 Description

The P1843 code for a 2006 Infiniti G35 specifically refers to an issue with the Automatic Transmission Fluid Pressure Switch 3. This switch is a crucial component of the transmission system that helps regulate the pressure of the transmission fluid. When this switch malfunctions or fails, it can lead to a variety of issues with the transmission system, affecting the vehicle's performance and drivability.

OBDII Code P1843 2006 Infiniti G35 - Automatic Transmission Fluid Pressure Switch 3
P1843 2006 Infiniti G35 Code - Automatic Transmission Fluid Pressure Switch 3

Common Causes of P1843 2006 Infiniti G35

  1. Electrical faults in the pressure switch
  2. Wiring issues
  3. Faulty transmission control module (TCM)
  4. Low transmission fluid levels
  5. Internal transmission problems

Symptoms of P1843 2006 Infiniti G35

  1. Harsh or delayed shifting
  2. Erratic behavior while driving
  3. Transmission slipping
  4. Decreased fuel efficiency
  5. Transmission failure in severe cases

How to Fix P1843 2006 Infiniti G35

  1. Begin by diagnosing the specific cause of the issue using a scan tool to read the DTC and pinpoint the problem.
  2. Inspect the Automatic Transmission Fluid Pressure Switch 3 and its wiring for any visible damage or corrosion.
  3. Test the switch for proper operation using a multimeter to check for continuity and resistance.
  4. If the switch is faulty, replace it with a new, OEM-quality part.
  5. Clear the DTC from the vehicle's ECM memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1843 2006 Infiniti G35

The typical repair costs for addressing the P1843 code on a 2006 Infiniti G35 can vary depending on the specific cause of the issue. In general, replacing the Automatic Transmission Fluid Pressure Switch 3 and addressing any related wiring or electrical issues can range from $150 to $400 in parts and labor. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates typically range between $80 and $150 per hour, with higher rates in metropolitan areas or at dealerships, and lower rates at independent shops. It's recommended to obtain local quotes for a more accurate estimate.

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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 P1843 2006 Infiniti G35 Code

1. What are the common symptoms of OBDII code P1843 on a 2006 Infiniti G35 related to the Automatic Transmission Fluid Pressure Switch 3?

The common symptoms include harsh shifting, transmission slipping, and the transmission going into limp mode.

2. What are the possible causes of OBDII code P1843 on a 2006 Infiniti G35?

The code P1843 in a 2006 Infiniti G35 is typically caused by a faulty automatic transmission fluid pressure switch 3, wiring issues, or a malfunctioning transmission control module.

3. How can I diagnose the Automatic Transmission Fluid Pressure Switch 3 issue on my 2006 Infiniti G35?

To diagnose the issue, you can use a scan tool to check for the OBDII code P1843 and inspect the wiring and connections related to the automatic transmission fluid pressure switch 3.

4. Can a DIY enthusiast repair OBDII code P1843 on a 2006 Infiniti G35?

While some DIY enthusiasts may be able to replace the automatic transmission fluid pressure switch 3 themselves, it is recommended to consult a professional mechanic for proper diagnosis and repair.

5. What are the potential risks of driving with OBDII code P1843 on a 2006 Infiniti G35?

Continuing to drive with OBDII code P1843 can lead to further damage to the transmission system and potentially cause more severe issues over time.

6. How much does it typically cost to repair OBDII code P1843 on a 2006 Infiniti G35?

The cost of repairing OBDII code P1843 can vary depending on the exact cause of the issue, but it may range from $200 to $500 or more, including parts and labor.

7. Is it safe to clear the OBDII code P1843 on a 2006 Infiniti G35 without fixing the underlying issue?

Clearing the code without addressing the underlying problem will only temporarily turn off the check engine light. The issue will persist and may lead to more serious transmission problems if left unresolved.

8. How often should the Automatic Transmission Fluid Pressure Switch 3 be inspected on a 2006 Infiniti G35?

It is recommended to have the automatic transmission fluid pressure switch 3 inspected during regular maintenance intervals or whenever you experience symptoms indicating a problem with the transmission.

9. Are there any preventative maintenance tips to avoid OBDII code P1843 on a 2006 Infiniti G35?

Regularly checking and changing the transmission fluid, following the manufacturer's maintenance schedule, and addressing any transmission issues promptly can help prevent OBDII code P1843 from occurring.

10. Can a faulty Automatic Transmission Fluid Pressure Switch 3 cause other transmission issues besides triggering OBDII code P1843 on a 2006 Infiniti G35?

Yes, a faulty automatic transmission fluid pressure switch 3 can cause other transmission issues such as erratic shifting, loss of power, and decreased fuel efficiency.

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