Trouble code P1441 means: EVAP System Flow During Non-Purge Conditions
The check gauge light on the 1994 Chevrolet Caprice comes on because there is something on the gauges that requires attention. It is a good idea to take the vehicle to a mechanic when this light comes on.
Trouble code P0400 means:Exhaust gas recirculation flow malfunction
4444
It requires a scanner to properly diagnosis a check engine light.
With a scan tool.
Bill Greene
The check engine light on a Chevrolet Colorado can be rest by connecting an OBD II code reader to the vehicle's computer . Each of the codes can then be reset which will turn the associated light off.
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions.
In the computer. If check engine light is on you can get them by plugging a reader into port under dash,.
There are many sensors that can trip the check engine light to come on.
P0300 is a random cylinder misfire. Ensure engine is properly tuned.
After repair, you reset with a scan tool.