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.
P2243-00O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1P2243-00O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1Manufacturer communications
9Original wording in English
JEEP
Reported code forms P2243-00
Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes…
JEEP
Reported code forms P2243-00
Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes…
RAM
Reported code forms P2243-00
Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes…
RAM
Reported code forms P2243-00
Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes…
FORD
Reported code forms P2243
Some 2020 Explorer vehicles equipped with a 2.3L EcoBoost engine and built on or before 02-Dec-2019 may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P062C and/or P2243.…
FORD
Reported code forms P2243
Some of the affected vehicles may be stuck in low gear after first staring the engine, the transmission may exhibit harsh shifting and hesitation. As a customer continues to drive, the vehicle may default to fourth…
Check vehicle applicability
17A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ford | ESCAPE | 2013 |
| Ford | EXPLORER | 2020 |
| Ford | FUSION | 2013 |
| Honda | ACCORD | 2010 |
| Honda | CROSSTOUR | 2010 |
| Honda | ODYSSEY | 2010 |
| Honda | PILOT | 2011 |
| Honda | RIDGELINE | 2010 |
| Jeep | GRAND WAGONEER | 2025 |
| Jeep | WAGONEER | 2025 |
| Land Rover | DISCOVERY SPORT | 2016 |
| Land Rover | LR4 | 2016 |
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.