# P1021 on the 2003 Honda Civic

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.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name P1021

- [10017632](https://open.wenmarpro.com/bulletins/10017632), 2005-11-15: PRODUCT UPDATE: ECM UPDATE TO PREVENT CATALYST DTC P0420 AND/OR VPS DTC P1021, MCM UPDATE TO CURRENT SPECIFICATIONS. \*TT
- [10003129](https://open.wenmarpro.com/bulletins/10003129), 2003-10-09: DIAGNOSTIC TROUBLE CODE P1021 SETS AFTER OIL CHANGE. \*TT
- [10001827](https://open.wenmarpro.com/bulletins/10001827), 2003-07-21: DIAGNOSTIC TROUBLE CODE P1021 AFTER AN OIL CHANGE. \*TT