# P0121 on the 2004 Cadillac CTS

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P0121

- [10017358](https://open.wenmarpro.com/bulletins/10017358), 2005-11-04: REDUCED ENGINE POWER, SERVICE ENGINE SOON \(SES\) LIGHT WITH ONE OR MORE OF THE FOLLOWING DTCS P0121, P0221, P2119, P2122, P2138, P2176. \*TT UPDATED 08\-20\-07. \*KB
- [10006478](https://open.wenmarpro.com/bulletins/10006478), 2004-05-04: A REDUCED ENGINE POWER COMPLAINT SETTING THROTTLE CODES \- P0121, P0221, P2119, P2122, P2138, P2176. \*TT