Troubleshooting Hints

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.

Malfunction of the vehicle speed sensor < M/T > or output shaft speed sensor < A/T >
Malfunction of the combination meter (printed-circuit board or speedometer and tachometer)
Malfunction of the ECM < M/T > or PCM < A/T >
Malfunction of the auto-cruise control-ECU
Damaged harness wires or connectors