What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
2Original wording in English
BUICK
Reported code forms P0446
The Preliminary Information communicates that a vehicle may come into the dealer with a SES light on and code P0446 set in Engine Control Module. Dealer is instructed to inspect the EVAP air inlet pipe to the EVAP…
BUICK
Reported code forms P0446
The Preliminary Information communicates that avehicle may come into the dealer with a SES light on and code P0446 set in Engine Control Module. Dealer is instructed to inspect the EVAP air inlet pipe to the EVAP…
Check vehicle applicability
1A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Buick | LACROSSE | 2018 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.