Code 0121?

Tiny
BOBSHORTY
  • MEMBER
  • 2000 SUZUKI VITARA
  • 1.6L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 90,000 MILES
Runs rough at times, erratic.
Sunday, September 4th, 2022 AT 1:40 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,867 POSTS
Hi,

The code is related to an issue with the throttle position sensor (TPS). The TPS is mounted on the throttle body. What I suggest first is this. There will be an electrical connector plugged into it. Make sure it is tight. If it is, remove it and check for corrosion or any damage to the wiring or the connector.

If everything appears good, my first suspect is the sensor is failing. If you look below, I attached the directions for replacing it.

Let me know if this helps or if you have other questions.

Take care,

Joe

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Sunday, September 4th, 2022 AT 8:56 PM

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