answersLogoWhite

0

Code PO121 typically indicates an issue with the throttle position sensor (TPS) in a vehicle. This sensor monitors the position of the throttle plate and sends that information to the engine control unit (ECU) to regulate engine performance. A PO121 code may suggest that the TPS is malfunctioning or sending incorrect voltage signals, which can lead to poor engine performance, reduced fuel efficiency, or stalling. It's important to diagnose and address this issue promptly to ensure proper vehicle operation.

User Avatar

AnswerBot

1d ago

What else can I help you with?