# P0156 on the 2003 Toyota 4Runner

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 P0156

- [10015535](https://open.wenmarpro.com/bulletins/10015535), 2005-07-28: MALFUNCTION INDICATOR LAMP \(MIL\) ON WITH DIAGNOSTIC TROUBLE CODE \(DTC\) P0136 AND/OR P0156 \(OXYGEN SENSOR CIRCUIT\). \*TT