While there is no single "ER" code for SCT devices, this likely refers to a or a specific numerical error (like 11066 or 110B8 ) often encountered during tuning . Common SCT Device Errors and Meanings
: A general communication error usually caused by a mismatch between the tune file and the vehicle’s VIN or strategy. Sct Device er
: Indicates the device cannot read the vehicle info, often due to low battery voltage (below 12.5V). Troubleshooting & Fixes Error Codes - SCT Performance and Bully Dog While there is no single "ER" code for