Trouble code P1406 means:EGR pintle position error
PO1406 ERG valve pintle position circuit error.
If that Buick has the 17 digit vin, the 8th digit would be the engine code.
Engine not reaching operating temperature.
Get a code read out from your engine computer and it will tell you what is wrong.
8th digit of VIN is engine code.
Trouble code P0108 means: MAP Sensor Circuit High Input
The code PO300 indicates a random or multiple cylinder misfire detected by the vehicle's onboard diagnostics in a 1996 Buick Roadmaster. This means that the engine is misfiring in one or more cylinders, which can lead to poor performance, increased emissions, and potential engine damage if not addressed. Possible causes include faulty spark plugs, ignition coils, fuel delivery issues, or vacuum leaks. It's advisable to diagnose the specific problem to resolve the misfire and restore optimal engine performance.
GA16de
Trouble code P0440 means:Evaporative emission control system malfunction
The country code and area code of Holbeach, United Kingdom is 44, (0)1406.
Trouble code P0307 means:Cylinder 7 misfire detected
The 2001 Buick Century came equipped with the 3100 V6 (engine code 'J'). The cooling system capacity is 11.6 quarts.