P056C
Cruise Control Cancel Signal
The cancel signal (driver-initiated cruise off) reports an implausible state - stuck, missing, or shorted.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Stalk or brake switch contact stuckCommon
Parts involved
- Cruise Control Stalk
- Brake Pedal Switch
P056C is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.