The Lemon Index

Check engine light · Engine codes

P2172: Throttle Actuator Control System - High Airflow Detected (Sudden)

Powertrain · GenericP2172
Stop and fix now
What it means

The computer saw a sudden, unexpected jump in airflow.

How serious

Stop and fix now. Don't put it off. This can affect safety, stall the car or cause expensive damage.

Where a shop starts

Throttle body fault. Then: vacuum leak.

Owners named P2172 in 13 complaints to the U.S. government, most often on the Chrysler 200.

Cars owners report it on

Complaints that name P2172, by model. Raw counts, not a failure rate: popular models get more complaints.

Years owners report it on most: 2015 Chrysler 200

The details

What P2172 means

The computer saw a sudden, unexpected jump in airflow.

Can I drive with P2172?

Stop and fix now. Don't put it off. This can affect safety, stall the car or cause expensive damage.

69% of the owner complaints that name P2172 also say the car stalls or shuts off. A complaint can describe more than one problem, so this doesn't prove the code caused it.

Common causes of P2172
  • Throttle body fault
  • Vacuum leak

A shop should confirm the cause with a scan and tests before replacing parts.

What owners describe
  • Stalls or shuts off: 69% of complaints
  • Shakes, runs rough or misfires: 46% of complaints
  • Brakes or ABS act up: 15% of complaints

Share of complaints naming the code whose text also mentions each problem.

Model years that report P2172 most

2015 Chrysler 200 (6).

Related codes

P2173 P2176 P2181 P2191 P2195 P2196 P2198 P219A

Quick answers

What does P2172 mean?

Throttle Actuator Control System - High Airflow Detected (Sudden). The computer saw a sudden, unexpected jump in airflow.

Can I drive with P2172?

Stop and fix now. Don't put it off. This can affect safety, stall the car or cause expensive damage.

What causes P2172?

Throttle body fault; Vacuum leak.

Counts: NHTSA owner complaints whose text names P2172. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.

Updated · Free to use with credit: Source: The Lemon Index (lemonindex.com). Get the data

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