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P1845 2005 Infiniti G35 Code - Automatic Transmission Fluid Pressure Switch 5

Quick Answer

The P1845 code for a 2005 Infiniti G35 refers to an issue with the Automatic Transmission Fluid Pressure Switch 5. Common causes include Faulty Automatic Transmission Fluid Pressure Switch 5, Low transmission fluid levels, Contaminated or degraded 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
P1845 2005 Infiniti G35 indicates Automatic Transmission Fluid Pressure Switch 5.
Common causes
Common causes include Faulty Automatic Transmission Fluid Pressure Switch 5, Low transmission fluid levels, Contaminated or degraded 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 16, 2024
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Code P1845 2005 Infiniti G35 Description

The P1845 code for a 2005 Infiniti G35 refers to an issue with the Automatic Transmission Fluid Pressure Switch 5. 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 and drivability.

OBDII Code P1845 2005 Infiniti G35 - Automatic Transmission Fluid Pressure Switch 5
P1845 2005 Infiniti G35 Code - Automatic Transmission Fluid Pressure Switch 5

Common Causes of P1845 2005 Infiniti G35

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

Symptoms of P1845 2005 Infiniti G35

  1. Harsh shifting between gears
  2. Delayed or erratic shifting patterns
  3. Transmission slipping
  4. Illumination of the Check Engine Light
  5. Reduced fuel efficiency

How to Fix P1845 2005 Infiniti G35

  1. Begin by diagnosing the specific cause of the issue by using a scan tool to read the fault codes and inspecting the transmission fluid level and condition.
  2. Replace the Automatic Transmission Fluid Pressure Switch 5 if it is found to be faulty. This may involve draining the transmission fluid and removing the switch from the transmission housing.
  3. Inspect the wiring and electrical connections related to the switch for any damage or corrosion. Repair or replace any damaged components.
  4. Refill the transmission with the appropriate type and amount of fluid, ensuring it is at the correct level.
  5. Clear the fault codes from the vehicle's computer and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1845 2005 Infiniti G35

The typical repair costs for addressing a P1845 code related to the Automatic Transmission Fluid Pressure Switch 5 in a 2005 Infiniti G35 can range from $200 to $500, including parts and labor. However, it's important to note that actual costs can vary depending on the specific diagnosis time and labor rates at auto repair shops, which can range from $80 to $150 per hour. Additionally, the cost may be higher at dealerships or in metropolitan areas, while independent shops may offer lower rates. It is recommended to obtain quotes from local repair shops 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 P1845 2005 Infiniti G35 Code

1. What are the common symptoms of OBDII code P1845 in a 2005 Infiniti G35 related to the Automatic Transmission Fluid Pressure Switch 5?

The common symptoms include harsh shifting, transmission slippage, and possible inability to shift gears.

2. What can cause the OBDII code P1845 in a 2005 Infiniti G35?

The code P1845 is typically triggered by a malfunction in the Automatic Transmission Fluid Pressure Switch 5, which can be caused by wiring issues, a faulty switch, or low transmission fluid levels.

3. How can I diagnose the OBDII code P1845 in my 2005 Infiniti G35?

Diagnosing the code involves using an OBDII scanner to retrieve the specific fault code, checking the transmission fluid level and condition, inspecting the wiring and connections related to the pressure switch, and testing the switch itself for proper functionality.

4. What are the potential risks of driving with the OBDII code P1845 in a 2005 Infiniti G35?

Continued driving with this code present can lead to further damage to the transmission system, potentially resulting in more costly repairs down the line.

5. Can I repair the OBDII code P1845 in my 2005 Infiniti G35 myself?

While some DIY enthusiasts may attempt to address this issue themselves, it is recommended to consult a professional mechanic with experience in transmission systems to accurately diagnose and repair the underlying cause of the code.

6. How much does it typically cost to repair the OBDII code P1845 in a 2005 Infiniti G35?

The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

7. Is it safe to continue driving my 2005 Infiniti G35 with the OBDII code P1845 present?

It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the transmission system and potentially compromise driving safety.

8. Can resetting the OBDII code P1845 in my 2005 Infiniti G35 make it go away permanently?

Resetting the code may temporarily clear the error, but if the underlying issue causing the code is not addressed, it is likely to reappear after driving the vehicle again.

9. How long does it take to repair the OBDII code P1845 in a 2005 Infiniti G35?

The repair time can vary depending on the complexity of the issue and the availability of parts, but it may take a few hours to a full day to address the Automatic Transmission Fluid Pressure Switch 5 problem.

10. Are there any preventive maintenance tips to avoid encountering the OBDII code P1845 in a 2005 Infiniti G35?

Regularly checking and maintaining proper transmission fluid levels, addressing any leaks promptly, and ensuring the overall health of the transmission system can help prevent issues like the P1845 code from occurring.

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