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.
P2A01O2 Sensor 1/2 Circuit PerformanceP2A01O2 Sensor 1/2 Circuit PerformanceP2A01:00HO2S (RH) circuit range/performanceManufacturer communications
5Original wording in English
FORD
Reported code forms P2A01
Some 2020-2022 F-Super Duty vehicles equipped with a 6.7L engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTC) P0315, P054F, P054E, P2A00, P2A01, and/or P02ED stored in…
FORD
Reported code forms P2A01
Some 2022 F-Super Duty vehicles equipped with a 6.7L engine and built on or before 05-Oct-2021 may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTC) P054E, P054F, P02ED, P2A00…
MAZDA
Reported code forms P2A01:00
Some customers may complain of a check engine light on while driving the vehicle. If DTCs P2A04:00, P2272:00 and/or other DTCs are found during diagnosis, follow the repair procedure below. P2A04:00 - HO2S (LH) circuit…
DODGE, RAM
Reported code forms P2A01
MIL Illumination Due to P2000, P2A00 and/or P2A01 FRONT O2 sensor. Customer may experience MIL illumination. Further investigation by the technician may find one or more of the following DTC(s) present: P2000 - NOX…
DODGE, RAM
Reported code forms P2A01
MIL Illumination Due to P2000, P2A00 and/or P2A01 This bulletin involves verifying all service bulletins related to high sooting issues have been properly addressed, inspecting both Oxygen (O2) sensors and either…
Check vehicle applicability
33A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Dodge | RAM 2500 | 2011 |
| Dodge | RAM 2500 | 2010 |
| Dodge | RAM 2500 | 2008 |
| Dodge | RAM 2500 | 2007 |
| Dodge | RAM 3500 | 2011 |
| Dodge | RAM 3500 | 2010 |
| Ford | F-250 SD | 2022 |
| Ford | F-250 SD | 2021 |
| Ford | F-250 SD | 2020 |
| Ford | F-350 SD | 2022 |
| Ford | F-350 SD | 2021 |
| Ford | F-350 SD | 2020 |
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.