# C1203 on the 2003 Toyota Sequoia

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 C1203

- [10003960](https://open.wenmarpro.com/bulletins/10003960), 2003-11-07: VSC COMMUNICATION BETWEEN SKID CONTROL COMPUTER AND ENGINE CONTROL MODULE \(ECM\) \- DIAGNOSTIC TROUBLE CODE \(DTC\) C1203. REVISED. \*TT
- [10003953](https://open.wenmarpro.com/bulletins/10003953), 2003-11-07: VSC COMMUNICATION BETWEEN SKID CONTROL COMPUTER AND ENGINE CONTROL MODULE \(ECM\) \- DIAGNOSTIC TROUBLE CODE \(DTC\) C1203. \*TT