Fault Code Lookup › Powertrain codes › P2172
P2172 Powertrain · generic OBD-II
Throttle Actuator Control System - Sudden High Airflow Detected
P2172 is a standard code covering engine, transmission, fuel and emissions. It names the system that logged the fault, not the part that failed. Below: which cars owners reported it on, what happened, and recalls on those cars, from 13 complaints filed with NHTSA. Updated November 9, 2026.
- 13owner reports
- 6car models
- 0mention a crash
- 0mention a fire
- 2015–2023model years
Which cars get code P2172?
Every model whose owners mentioned P2172 in a complaint, most reports first. Each year opens that car's full problem report. Popular models collect more reports because more of them are on the road.
Where does P2172 show up?
By brand
- Chrysler6
- Jeep5
- Ram1
- Dodge1
Component the owner filed it under
Is there a recall for P2172?
The others concern the component owners file this code under (Engine) on the same cars; they may or may not relate to the code. Recall repairs are free; check your VIN at nhtsa.gov/recalls.
Engine And Engine Cooling: Engine Chrysler (FCA US LLC) is recalling certain 2018 Jeep Cherokee and Compass vehicles equipped with 2.4L engines. The engines may have a cracked oil pump housing that can result in oil pump failure.
2018 Jeep Cherokee, 2018 Jeep Compass. Full risk and remedy on each car's report.
Engine And Engine Cooling: Exhaust System Chrysler (FCA US LLC) is recalling certain model year 2015 Jeep Cherokee vehicles manufactured October 1, 2014, to June 18, 2015. The affected vehicles may have a misrouted air conditioning suction/discharge hose.
2015 Jeep Cherokee. Full risk and remedy on each car's report.
What happened when owners saw P2172?
10 of the 13 reports, spread across the models above, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.
…THEREFORE, I TOOK THE CAR TO AN O'REILLYS FOR A FREE TEST & THE ONLY CODES THAT CAME BACK WAS P0302 - CYLINDER 2 MISFIRE & P2172 - THROTTLE ACTUATOR CONTROL SYSTEM. THE ISSUE HAD GOTTEN WORSE SO I HAD A MECHANIC REPLACE ALL 4 SPARK PLUGS WITH NGK IRIDIUM PLUGS AND THE 2ND CYLINDER IGNITION COIL WITH A BOSCH IGNITION COIL. THE CYLINDER 2 MISFIRE CODE WENT AWAY WHEN RESTARTING THE VEHICLE BUT THE MAIN ISSUE PERSISTS, THE CAR WON'T STAY ON & THE P2172 TACS CODE IS STILL PRESENT. THE VEHICLE IS UNSAFE & UNABLE TO DRIVE. THE DATE I'M USING FOR THE QUESTION OF WHEN THE ISSUE HAPPENED IS WHEN I HAD THE SPARK PLUGS AND IGNITION COIL REPLACED. THE ORIGINAL ISSUE STARTED AROUND THE 2ND WEEK OF…
Car turn off on its own error code P2172 U1428 maybe throttle body. Other Jeep have a recall on this but my vin isn’t included.
My 2022 Jeep Compass is stalling when I break going downhill. I have had it scanned and it stored codes are P032F and P2172. The combustion engine producing insufficient torque and sudden high airflow detected. I believe its a ruptured brake booster diaphragm dumping unmetered air into the intake. NHTSA has a open investigation into Compasses stalling while driving and Im filling the complaint to request a goodwill repair.
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 SYSTEM - SUDDEN HIGH AIRFLOW DETECTED". THE CAR IS BEING TOWED (AS OF THIS WRITING) TO THE SELLING DEALER LARRY MILLER DODGE IN PEORIA AZ FOR SERVICE. PERSONAL NOTE: THE MANUFACTURER/DEALER SHOULD BUY THIS CAR BACK... IT'S HAD 2 RECALLS (ONE FOR THE WINDSHIELD WIPER MOTOR AND ANOTHER FOR THE ENTIRE ENGINE TO BE REPLACED) AND ALREADY HAD THE A/C REPLACED.
…Car was tested by local mechanic and had the following codes appear on diagnostic test: P1414 Cylinder 4 Reactivation Control Performance, P032F Combustion Engine Producing Insufficient Torque; P2172 High Airflow/Vacuum Leak Detected This happened one previous time pulling away from a stop light several months ago (again at a slow speed-car shut off and auto shut off light appeared). Did not report or document as I was able to get car cranked back up immediately and continue driving with no issues at that time.
I own a Ram 1500 Big Horn that has repeatedly shut off while driving and entered limp mode, causing sudden loss of power and engine shaking. This has occurred both while driving and while stopped at intersections, creating a serious safety hazard in traffic. The vehicle has been taken to the dealership more than nine times for the same issue, but they initially claimed they could not diagnose the problem because no codes were present. The vehicle recently broke down again and the dealership retrieved diagnostic codes P2172, C121C00, B151A100, and U100300, indicating airflow and CAN bus communication issues. Ram ordered an alternator to fix the truck, but the first part received was defective…
**I WILL CONTINUE TO POST UNTIL MY ISSUE IS RESOLVED** MY 2015 CHRYSLER 200 LIMITED HAS BEEN EXPERIENCING THE SAME THING AS ALL OTHER REPORTS. 06/08/17 CAR TURNED OFF WHILE DRIVING AND WOULD NOT IMMEDIATELY TURN BACK ON. WHEN IT DID IT WOULD SPUTTER AND THEN STALL. 06/09/17. CHECK ENGINE LIGHT CAME ON CODE P2172 FOR THROTTLE ACTUATOR CONTROL SYSTEM AND THE CAR WOULD NOT LET ME ACCELERATE PAST 32 MPH. ONE OF THE POSSIBLE ISSUES WOULD BE AN OPEN OR SHORT IN THE WIRE HARNESS. THIS IS SOMETHING THAT IS DISCUSSED IN THE R24 RECALL HOWEVER, MY VIN IS NOT ON THE LIST YET. THIS IS AN EXTREMELY UNSAFE VEHICLE AND IT NEEDS TO BE ADDRESSED IMMEDIATELY. I'M CONFIDENT THAT THERE ARE MORE THAN ENOUGH…
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 INTERSECTION IN TOWN. THE 3RD INCIDENT THE CHECK ENGINE LIGHT CAME ON. HAD IT READ AND CODE P2172 IS THROTTLE ACTUATOR CONTROL SYSTEM. ALL 3 TIMES WERE WITHIN 8 DAYS.
MY 2015 CHRYSLER 200 LIMITED HAS BEEN EXPERIENCING THE SAME THING AS ALL OTHER REPORTS. 06/08/17 CAR TURNED OFF WHILE DRIVING AND WOULD NOT IMMEDIATELY TURN BACK ON. WHEN IT DID IT WOULD SPUTTER AND THEN STALL. 06/09/17. CHECK ENGINE LIGHT CAME ON CODE P2172 FOR THROTTLE ACTUATOR CONTROL SYSTEM AND THE CAR WOULD NOT LET ME ACCELERATE PAST 32 MPH. ONE OF THE POSSIBLE ISSUES WOULD BE AN OPEN OR SHORT IN THE WIRE HARNESS. THIS IS SOMETHING THAT IS DISCUSSED IN THE R24 RECALL HOWEVER, MY VIN IS NOT ON THE LIST YET. THIS IS AN EXTREMELY UNSAFE VEHICLE AND IT NEEDS TO BE ADDRESSED IMMEDIATELY. I'M CONFIDENT THAT THERE ARE MORE THAN ENOUGH PEOPLE TO BEGIN A CLASS ACTION SUIT. IF I HAVE TO POST ON…
MY 2015 CHRYSLER 200 LIMITED HAS BEEN EXPERIENCING THE SAME THING AS ALL OTHER REPORTS. 06/08/17 CAR TURNED OFF WHILE DRIVING AND WOULD NOT IMMEDIATELY TURN BACK ON. WHEN IT DID IT WOULD SPUTTER AND THEN STALL. 06/09/17. CHECK ENGINE LIGHT CAME ON CODE P2172 FOR THROTTLE ACTUATOR CONTROL SYSTEM AND THE CAR WOULD NOT LET ME ACCELERATE PAST 32 MPH. ONE OF THE POSSIBLE ISSUES WOULD BE AN OPEN OR SHORT IN THE WIRE HARNESS. THIS IS SOMETHING THAT IS DISCUSSED IN THE R24 RECALL HOWEVER, MY VIN IS NOT ON THE LIST YET. THIS IS AN EXTREMELY UNSAFE VEHICLE AND IT NEEDS TO BE ADDRESSED IMMEDIATELY. I'M CONFIDENT THAT THERE ARE MORE THAN ENOUGH PEOPLE TO BEGIN A CLASS ACTION SUIT. IF I HAVE TO POST ON…
P2172: questions drivers ask
What does code P2172 mean?
P2172 is a generic OBD-II powertrain code. Its standard definition is "Throttle Actuator Control System - Sudden High Airflow Detected". The code tells you which system set the fault, not which part failed; the owner reports on this page show what it meant in practice for 6 car models.
Which cars get code P2172 most often?
In NHTSA owner complaints, P2172 is mentioned most for the Chrysler 200 (6), Jeep Cherokee (2), Jeep Compass (2), across 6 models and model years 2015 to 2023. Popular models collect more reports because more of them are on the road.
Is there a recall for code P2172?
No NHTSA recall text names P2172 directly. 2 recalls on the cars that report this code concern the same component owners name most (Engine); they may or may not relate to the code. Check your VIN at nhtsa.gov/recalls.
What should I do if my car shows P2172?
Write down when the code appeared and what the car did (warning lights, loss of power, noises, speed, weather). Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer or independent workshop to read the stored freeze-frame data before anyone clears the code, and keep the repair order. If the car loses power in traffic, stop driving it. CarHooq does not diagnose: these are owner reports and official recall notices, not repair advice.
How this page was made
CarHooq read the text of every owner complaint filed with NHTSA for 19 US and European brands (model years 2012 onwards) and picked out the diagnostic trouble codes owners wrote down. This page lists every mention of P2172. The definition is the generic SAE J2012 wording; a carmaker may use the code slightly differently. Nothing here is a diagnosis. More answers: the fault code FAQ. Data: NHTSA Office of Defects Investigation (public domain), retrieved November 9, 2026. How CarHooq reports are made.
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