P2172: Throttle Actuator Control System - Sudden High Air Flow Detected
What Does P2172 Mean?
P2172 is a diagnostic trouble code indicating: Throttle Actuator Control System - Sudden High Air Flow Detected. This code relates to the powertrain system. It has been reported in NHTSA complaints across 5 different vehicle models.
Symptoms of P2172
- ⚠️ Check engine light illuminated
- ⚠️ Traction control system activated
Common Causes
- 🔍 Throttle body or throttle position sensor issue
- 🔍 Wiring or connector problem
P2172 Reports by Year
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"THE CAR DIES (STALLS, DOESN'T RUN, ETC.) WHILE DRIVING.. OR WHEN STOPPED, OR WHENEVER IT WANTS. IT WILL RESTART AND THEN DRIVE FOR A WHILE AND THEN DIE AGAIN. THE CHECK ENGINE LIGHT DIDN'T EVEN COME ON AFTER SEVERAL STALLS BUT EVENTUALLY IT CODED WITH P2172 WHICH IS "THROTTLE ACTUATOR CONTROL SYST"
— Dodge Dart owner, 12/03/2018
"VEHICLE TURNED OFF ON ITS OWN UPON REACHING 40MPH AND COMING TO A COMPLETE STOP. VEHICLE LATER TURNED OFF WHILE ON THE HIGHWAY AT 65 MPH IN TRAFFIC WHILE IN THE MIDDLE LANE. THIS MADE THE VEHICLE ACCELERATOR INOPERABLE AND AT THE SAME TIME MADE THE VEHICLE LOSE SPEED SLOWING DOWN WHILE IN TRAFFIC. V"
— Jeep Cherokee owner, 01/07/2019
"THREE TIMES THIS HAS HAPPENED WHILE DRIVING. SLOWING TO STOP AT A LIGHT ON A HIGHWAY IN HEAVY TRAFFIC. SLOWING DOWN AT A STOP SIGN ON SIDE STREET NO TRAFFIC. TURN WITH ACCELERATION OFF A HEAVY CONGESTED AREA TO SIDE ROAD. NO ACCIDENT TO REPORT, BUT COULD HAVE BEEN A MAJOR ONE AT THE BUSIEST INTERS"
— Jeep Compass owner, 03/31/2019
Source: NHTSA Complaints Database
Most Reported Vehicles for P2172
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | CHRYSLER 200 | |
| 2 | JEEP CHEROKEE | |
| 3 | DODGE DART | |
| 4 | JEEP COMPASS | |
| 5 | JEEP WAGONEER |
P2172 Reports by Vehicle
Detailed NHTSA complaint analysis for each vehicle model.
Frequently Asked Questions
Can I drive with this code?
Will this code clear itself?
How do I find the exact cause?
What To Do Next
Possible Fixes
- 🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
- 🔧 Test the relevant sensor(s) with a multimeter before replacing
- 🔧 Inspect wiring harness and connectors for damage, corrosion, or loose connections
- 🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.