Common manufacturer specific engine light codes for Chevrolet vehicles include P0342, P1031, P1032 and P1105. These codes refer to issues concerning the vehicle's camshaft position sensor, heater current monitor sensors, heater warm up system and secondary vacuum sensor.
The check engine light is a visual indicator that generally signifies trouble with the engine control system. This dashboard light may switch on and continuously stay in the same state or blink repeatedly, depending on the type of problem. The actual fault is usually determined by using a special tool to obtain the diagnostic trouble code and the corresponding definition.
Other engine light codes for Chevrolets include P1804, P1813 and P1835. These codes point to a malfunction in the vehicle's ground control relay, torque control and kick-down switch.