AutoCodes – RAM – P2174 RAM

P2174 RAM Code - Low Airflow/Restriction Detected Instantaneous Accumulation

Quick Answer

The Diagnostic Trouble Code (DTC) will set when the Powertrain Control Module (PCM) calculated Manifold Absolute Pressure (MAP) Sensor value is greater than the actual MAP value plus an offset value. Common causes include Restricted air inlet, Faulty Manifold Absolute Pressure (MAP) Sensor, Manifold Absolute Pressure Sensor harness is open or shorted. 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: P2174 RAM indicates Low Airflow/Restriction Detected Instantaneous Accumulation.
Common causes: Common causes include Restricted air inlet, Faulty Manifold Absolute Pressure (MAP) Sensor, Manifold Absolute Pressure Sensor harness is open or shorted.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 746

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 03, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P2174 RAM Description

OBDII Code P2174 RAM - Low Airflow/Restriction Detected Instantaneous Accumulation - AutoCodes.com — P2174 RAM Code - Low Airflow/Restriction Detected Instantaneous Accumulation

What does this mean?

What are the Possible Causes of the DTC P2174 RAM?

Restricted air inlet
Faulty Manifold Absolute Pressure (MAP) Sensor
Manifold Absolute Pressure Sensor harness is open or shorted
Manifold Absolute Pressure Sensor circuit poor electrical connection
Faulty Throttle Position (TP) Sensor

How to Fix the DTC P2174 RAM?

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 does this mean?

Code Tech Notes

There is a Factory Service Bulletin for the 2004 Ram Truck:
2004 Ram Truck Factory Service Bulletin OBDII Code P2174

The bulletin suggests starting by cleaning the throttle body and clearing the code

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2174 RAM 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.

Need more information about the P2174 RAM code?

Need more information on how to fix the P2174 RAM code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2174 RAM 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 P2174 RAM Code

1. What are the common symptoms of OBDII code P2174?

- Common symptoms include reduced engine performance, rough idling, stalling, and the Check Engine Light coming on.

2. What are the possible causes of OBDII code P2174?

- The code P2174 can be triggered by issues such as a dirty or clogged air filter, a faulty mass airflow sensor, a vacuum leak, or a problem with the throttle body.

3. How can I diagnose the cause of OBDII code P2174?

- To diagnose the cause of code P2174, you can start by checking the air filter for dirt or clogs, inspecting the mass airflow sensor for any damage, and conducting a thorough inspection of the intake system for leaks.

4. What are some repair tips for addressing OBDII code P2174?

- Repair tips may include cleaning or replacing the air filter, cleaning or replacing the mass airflow sensor, fixing any vacuum leaks, and cleaning the throttle body.

5. Can I continue driving my vehicle with OBDII code P2174?

- It is not recommended to continue driving your vehicle with code P2174 as it can lead to further engine damage and potential safety hazards. It's best to address the issue promptly.

6. How serious is OBDII code P2174?

- While code P2174 may not cause immediate catastrophic damage, it can impact your engine's performance and fuel efficiency. It's important to address the issue to prevent further problems.

7. How much does it typically cost to repair OBDII code P2174?

- The cost of repairing code P2174 can vary depending on the cause of the issue and the specific repairs needed. Costs may range from a simple air filter replacement to more extensive sensor or intake system repairs.

8. Can a DIY enthusiast fix OBDII code P2174 at home?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address code P2174 at home by following repair guides and tutorials. However, it's always recommended to consult a professional if unsure.

9. How long does it take to repair OBDII code P2174?

- The repair time for code P2174 can vary based on the underlying cause and the complexity of the repairs needed. It may take anywhere from a few hours to a full day to diagnose and fix the issue.

10. Will resetting the OBDII code P2174 clear the problem?

- Resetting the code may temporarily turn off the Check Engine Light, but it will not fix the underlying issue causing code P2174. It's important to diagnose and address the root cause of the problem.