# P0638 on the 2006 Hyundai Santa Fe

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 P0638

- [10029229](https://open.wenmarpro.com/bulletins/10029229), 2009-06-30: HYUNDAI: MIL ON DTC P2135 OR P0638 OR COLD ENGINE RPM FLUCTUATION\- TPS REPLACEMENT \& ECM UPDATE. SOME VEHICLES MAY EXPERIENCE EITHER SLIGHT ENGINE RPM FLUCTUATION AT COLD WARM UP OR MALFUNCTION INDICATOR LAMP ILLUMINATED WITH THE ETC \(ELECTRONIC THROTTLE CONTROL\) SYSTEM. \*PE