P2172 Dodge Code - High Air Flow/ Vacuum Leak Detected Instantaneous Accumulation
Quick Answer
The Diagnostic Trouble Code (DTC) will set when the Powertrain Control Module (PCM) detects that a large vacuum leak is present or that the signal voltage for both Throttle Position (TP) Sensors is stuck a 2.5 volts and calculated Manifold Absolute Pressure (MAP) is less than the Gas Flow Adaptation value. Common causes include Large Vacuum Leak, 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
- P2172 Dodge indicates High Air Flow/ Vacuum Leak Detected Instantaneous Accumulation.
- Common causes
- Common causes include Large Vacuum Leak, 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.
Code P2172 Dodge Description
What are the Possible Causes of the DTC P2172 Dodge?
- Large Vacuum Leak
- 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 P2172 Dodge?
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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2172 Dodge 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 P2172 Dodge code?
Need more information on how to fix the P2172 Dodge code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2172 Dodge code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2172 Dodge Code
What does the OBDII code P2172 mean on a Dodge?
P2172 indicates "High Air Flow/Vacuum Leak Detected Instantaneous Accumulation," meaning the engine control module (ECM) has detected an excessive amount of air entering the engine, often due to a vacuum leak or throttle body issue.
What are the common symptoms of code P2172 on a Dodge?
Symptoms may include rough idling, stalling, decreased engine performance, poor fuel economy, and the check engine light being illuminated.
What causes the P2172 code to trigger on a Dodge?
Common causes include intake manifold vacuum leaks, a stuck open throttle body, a malfunctioning mass air flow (MAF) sensor, or issues with the intake air duct or gasket.
Can a dirty throttle body cause P2172 on a Dodge?
Yes, a dirty or malfunctioning throttle body can cause improper air intake regulation, potentially triggering the P2172 code.
How do I diagnose a P2172 code on my Dodge?
Start by checking for vacuum leaks, inspecting the throttle body, testing the mass air flow sensor, and examining the intake air duct and related components for damage or disconnections.
Is it safe to drive with the P2172 code on my Dodge?
Driving with this code may lead to reduced engine performance and potential stalling, which can be unsafe. It's best to address the issue as soon as possible.
How can I fix the P2172 code on a Dodge?
Repairs may include sealing vacuum leaks, cleaning or replacing the throttle body, replacing a faulty MAF sensor, or repairing damaged intake components.
Will clearing the code solve the problem?
Clearing the code may temporarily turn off the check engine light, but if the underlying issue isn't resolved, the code will likely return.
Can a bad MAF sensor cause P2172 on a Dodge?
Yes, a malfunctioning mass air flow sensor can misreport airflow data to the ECM, leading to the P2172 code.
What tools are needed to diagnose and fix the P2172 code?
You'll typically need an OBDII scanner, a vacuum gauge, basic hand tools, and possibly throttle body or intake cleaner to diagnose and fix the issue.
Discuss the causes and fixes for P2172 Dodge OBDII Code
Code P2172 Dodge comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
