Engine-Codes.com
Engine-Codes – Infiniti – P1845 2004 Infiniti G35

P1845 2004 Infiniti G35 Code - Automatic Transmission Fluid Pressure Switch 5

Quick Answer

The P1845 code for a 2004 Infiniti G35 refers to an issue with the Automatic Transmission Fluid Pressure Switch 5. Common causes include Faulty automatic transmission fluid pressure switch, Clogged transmission filter, Low transmission fluid levels. 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 2004 Infiniti G35 indicates Automatic Transmission Fluid Pressure Switch 5.
Common causes
Common causes include Faulty automatic transmission fluid pressure switch, Clogged transmission filter, Low transmission fluid levels.
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 14, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1845 2004 Infiniti G35 Description

The P1845 code for a 2004 Infiniti G35 refers to an issue with the Automatic Transmission Fluid Pressure Switch 5. This switch is responsible for monitoring the pressure of the transmission fluid within the transmission system. When this switch detects a problem with the fluid pressure, it will trigger the P1845 diagnostic trouble code (DTC).

OBDII Code P1845 2004 Infiniti G35 - Automatic Transmission Fluid Pressure Switch 5
P1845 2004 Infiniti G35 Code - Automatic Transmission Fluid Pressure Switch 5

Common Causes of P1845 2004 Infiniti G35

  1. Faulty automatic transmission fluid pressure switch
  2. Clogged transmission filter
  3. Low transmission fluid levels
  4. Internal transmission damage
  5. Electrical issues in the transmission system

Symptoms of P1845 2004 Infiniti G35

  1. Harsh or delayed shifting
  2. Slipping gears
  3. Transmission overheating
  4. Transmission fluid leaks
  5. Illuminated check engine light

How to Fix P1845 2004 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 and replace it if faulty.
  3. Check and replace the transmission filter if it is clogged.
  4. Ensure the transmission fluid levels are at the correct level and top up if necessary.
  5. If internal transmission damage is suspected, further inspection and potentially a rebuild or replacement of the transmission may be necessary.

Cost to Fix P1845 2004 Infiniti G35

The cost of repairing a P1845 code on a 2004 Infiniti G35 can vary depending on the specific cause of the issue. On average, the cost of parts for this repair could range from $50 to $200, while labor costs could range from $100 to $300. Overall, the total cost of repairing this issue could be anywhere from $150 to $500. It is important to note that these are rough estimates, and actual costs may vary based on factors such as location, labor rates, and the extent of the repairs needed. It is recommended to obtain quotes from local auto repair shops for a more accurate cost estimate.

Need more information about the P1845 2004 Infiniti G35 code?

Need more information on how to fix the P1845 2004 Infiniti G35 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1845 2004 Infiniti G35 code diagnosed by a professional: Find a repair shop in your area

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 2004 Infiniti G35 Code

1. What are the common symptoms of OBDII code P1845 in a 2004 Infiniti G35 related to the Automatic Transmission Fluid Pressure Switch 5?

The common symptoms include harsh shifting, transmission slippage, and the vehicle going into "limp mode."

2. What are the possible causes of OBDII code P1845 in a 2004 Infiniti G35?

The code P1845 in a 2004 Infiniti G35 is often caused by a faulty Automatic Transmission Fluid Pressure Switch 5, wiring issues, or a malfunctioning transmission control module.

3. How can I diagnose the Automatic Transmission Fluid Pressure Switch 5 in my 2004 Infiniti G35?

To diagnose the Automatic Transmission Fluid Pressure Switch 5, you can use a scan tool to read the OBDII code, perform a visual inspection of the switch and its wiring, and conduct a continuity test to check for proper function.

4. Can I drive my 2004 Infiniti G35 with OBDII code P1845 related to the Automatic Transmission Fluid Pressure Switch 5?

It is not recommended to drive your vehicle with OBDII code P1845 related to the Automatic Transmission Fluid Pressure Switch 5, as it can lead to further damage to the transmission.

5. How do I repair OBDII code P1845 in my 2004 Infiniti G35?

Repairing OBDII code P1845 involves replacing the faulty Automatic Transmission Fluid Pressure Switch 5, repairing any damaged wiring, and clearing the code with a scan tool.

6. Is it possible to reset OBDII code P1845 in a 2004 Infiniti G35 without fixing the underlying issue?

Resetting the code without addressing the underlying issue, such as a faulty Automatic Transmission Fluid Pressure Switch 5, will likely result in the code reappearing once the vehicle is driven.

7. Can a DIY enthusiast fix OBDII code P1845 in a 2004 Infiniti G35?

While some DIY enthusiasts may have the skills to replace the Automatic Transmission Fluid Pressure Switch 5, it is recommended to consult a professional mechanic for accurate diagnosis and repair of OBDII code P1845.

8. How much does it cost to repair OBDII code P1845 related to the Automatic Transmission Fluid Pressure Switch 5 in a 2004 Infiniti G35?

The cost of repairing OBDII code P1845 can vary depending on the cause of the issue, but it typically ranges from $200 to $500 including parts and labor.

9. Are there any preventive maintenance measures to avoid OBDII code P1845 in a 2004 Infiniti G35?

Regularly checking and maintaining the transmission fluid level and quality, as well as addressing any transmission-related issues promptly, can help prevent OBDII code P1845 in a 2004 Infiniti G35.

10. How urgent is it to address OBDII code P1845 in a 2004 Infiniti G35?

It is essential to address OBDII code P1845 promptly to prevent further damage to the transmission and ensure the safe operation of the vehicle.

Discuss the causes and fixes for P1845 2004 Infiniti G35 OBDII Code

Submit a New Comment

Code P1845 2004 Infiniti G35 comments

No comments found for this page.