The P1633 code in your 2020 Ford Expedition indicates the electronic throttle control (ETC) system has stored additional diagnostic data. This Ford-specific code signals there's information available about a throttle system concern that requires further investigation.
Understanding P1633
P1633 is an information code indicating the ETC system has detected an anomaly and stored detailed data for diagnosis. It often accompanies other throttle-related codes and provides context for troubleshooting.
Common Causes of P1633
- Throttle body issues triggering monitoring
- Accelerator pedal sensor problems
- Wiring concerns in ETC circuit
- PCM software issues
- Previous throttle-related fault
- Voltage fluctuations affecting ETC
Symptoms Associated with P1633
- Check engine light on
- May have no immediate symptoms
- Possible reduced power mode
- Throttle response concerns
- Other ETC codes present
- Intermittent throttle issues
Expedition Full-Size SUV
The Expedition requires reliable throttle control for its size and capability. P1633 indicates the system has flagged something for attention, even if current operation seems normal.