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 wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P2DE1Cold Start Air Fuel Ratio Control System RichManufacturer communications
3Original wording in English
HONDA
Reported code forms P2DE1
Service Bulletin - During engine start in cold conditions, a miscalculation in the PCM causes the air-fuel ratio to exceed DTC P2DE1 rich criteria.
HONDA
Reported code forms P2DE1
Service Bulletin - During engine start in cold conditions, it is possible for air-fuel ratio to exceed DTC P2DE1 rich criteria.
HONDA
Reported code forms P2DE1
"Service bulletin - The MIL comes on with DTC P2DE1 (Cold Start Air Fuel Ratio Control System Rich). A new cold start emission reduction strategy was applied to detect air fuel ratio abnormalities. When certain fuel and…
Check vehicle applicability
3A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Honda | ACCORD HYBRID | 2021 |
| Honda | HR-V | 2022 |
| Honda | HR-V | 2021 |
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.