Code 21
(2 flashes, pause, 1 flash)Throttle position sensor/voltage highCheck for a sticking or misadjusted TPS plunger. Check all wiring and connections between the TPS and the ECM. Adjust or replace the TPS
Google the code and you will have the answer.
If you mean the car, it's a Chevrolet model. If you mean a road... be more specific; "El Camino" is Spanish for "the road." In California, it's commonly used for El Camino Real, which was (as a road) built by various people at various times, and originated (as a trail or path) by people traveling between the Spanish missions in California.
El Camino means The Road
It was an RPO code for a sport suspension package.
Trouble code P1416 means:Secondary air injection (AIR) system
Trouble code P1416 means: AIR System Bank 2
Trouble code P0300 means:Random/multiple cylinder misfire detected
Trouble code P0304 means: Cylinder 4 Misfire Detected
Trouble code P0410 means: Secondary AIR System Performance
The translation of "El Camino" is "The Road".
Road.
Trouble code P0410 means:Secondary air injection system malfunction