What is p0172 Hyundai Accent?

The P0172 code for a Hyundai Accent indicates that the engine control module (ECM) has detected a rich fuel mixture, meaning there is too much fuel and not enough air in the air-fuel mixture. This can result from issues such as a faulty mass air flow sensor, a defective fuel injector, or problems with the fuel pressure regulator. Symptoms may include poor fuel economy, rough idling, or engine stalling. Addressing this issue typically involves diagnosing the underlying cause and making necessary repairs to restore proper air-fuel balance.