# P1640 on the 2000 Isuzu Trooper

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 P1640

- [615678](https://open.wenmarpro.com/bulletins/615678), 2001-01-28: THIS BULLETIN PROVIDES INFORMATION ON THE P1640 AND P1650 OUTPUT DRIVE CODES WHICH REFER TO OUTPUT DRIVER CIRCUIT CONDITIONS RELATED TO THE PCM. \*TT