Error Code P2247: What It Means & What To Do?

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The most common symptom of any OBD code is the illumination of the Check Engine Light. If you notice a lack in the engine performance and reduced fuel efficiency along with lean engine, this might be an indication of faulty oxygen sensor and intake system, thus indicating OBD code P2247 error.

A stored code P2247 means that the powertrain control module (PCM) has detected an open reference voltage circuit for the upstream O2 sensor for engine bank two Sensor 1 refers to an upstream sensor and Bank 2 refers to the bank of the engine which does not contain the number one cylinder. The engine air to fuel ratio for each engine bank is monitored by the PCM using data input from heated exhaust oxygen sensors. Each oxygen sensor is constructed using a zirconium dioxide sensing element situated in the center of a vented steel housing. Tiny electrodes (usually of platinum) attach the sensing element to wire leads in the oxygen sensor harness connector and the connector plugs into the controller area network (CAN) which connects the oxygen sensor wiring harness to the PCM connector.

What causes this problem with the Oxygen Sensor Reference Voltage Circuit Open - Bank 2 Sensor 1?

• Defective/damaged O2 sensor
• Burnt, broken, or disconnected wiring and/or connectors related to the sensor and circuit
• Defective/faulty catalytic converter
• Engine exhaust leakages

1. Electronic Control Unit - ECU monitors the temperature differences in the boost converter with the help of the temperature sensors to prevent the converter from overheating and malfunctioning. Thus, replace faulty ECU immediately.
2. Automatic Transmission Module - Sometimes the automatic transmission module is unable to communicate or correctly anticipate the speed of the vehicle and thus creates difficulty in gear shift leading to sluggish acceleration, throttle response and stalling. Thus can also hamper a lot of components physically and thus must be check for and replaced, if required.
3. Engine Control Module - ECM failures and faults can be very difficult to find and resolve as these are very rare and might require a complete reprogramming of the system to avoid wrong codes from getting stored in the system, leading to misdiagnoses. Replace it now!
4. Powertrain Control Module - Faulty PCM can disrupt the normal functioning of the vehicle by affecting the transmission system and the fuel delivery system. This will cause the system to store wrong OBD error and thus can lead to misdiagnoses.
5. Oxygen Sensor - If the fuel to air ratio is not correct, the engine may work in lean or rich conditions. This not only hampers the performance output, but also affects the fuel economy, exhaust emissions and acceleration. Thus, a faulty oxygen sensor must be replaced as if it important for keeping in check the oxygen levels entering/exiting the engine.
6. Exhaust Gas Recirculation Valve - It is auto part commonly found on many road going automobiles. It is a part of the vehicle’s exhaust gas recirculation (EGR) system, an emissions system that is designed to recirculate exhaust gases back into the vehicle’s intake so that it can reduce cylinder temperatures and NOx emissions. Purchase top notch exhaust gas recirculation valve from us at economical prices.
7. Diagnostic Tool - In order to be that DIY guy, you need few diagnostic tools to get your car problems pointed out easily. Our diagnostic tools collection will come handy to do so, so why not have a look?
8. Diesel Exhaust Fluid Pump - For the proper functioning of the transmission system, the diesel exhaust fluid pump needs to work properly. If it is not functioning, the transmission may slip and cause harsh shifts too. Thus replace faulty pump now and buy a new one from us!
9. Fuel Injector - The fuel injector is responsible for maintaining the optimal levels of the air to fuel ratios in the combustion chambers for the maximum out from the engines. It the fuel injector goes down, it hampers the entire efficiency of the engine. Thus, check and replace the bad injector now!
10. Diesel Exhaust Fluid Pump - If the DEF pump is not functioning properly, the exhaust system will not be able to properly manage the harmful emissions from the vehicle and can also result in inefficient fuel consumption. Thus, replace it now, if found defective.

We at Parts Avatar Canada care for our customers, and that’s why we will help you to diagnose P2247 code by listing out some major symptoms. They are mentioned below as follows

Common Symptoms

• Reduced fuel efficiency
• Deficient engine performance
• Engine stalling and not starting
• Black smoke from tailpipe
• Rough engine idles
• Service engine soon lamp illumination

Learn the ways with which you can correct this trouble code:

• Oxygen Sensor Replacement
• Catalytic Converter Replacement
• MAF Sensor Replacement
• Exhaust Manifold Replacement
• PCM/ECM Replacement

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of Oxygen Sensor, ECM, PCM, Intake Manifolds, Fuel Pressure, Fuel Pressure Regulator, Fuel Pressure Sensor, Fuel Pump, Oxygen Sensor Connectors and a lot more. We are sure that now all your issues would be resolved.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2247 code to be stored:

• Use a scan tool and put it in vehicle's OBD-II port to confirm presence of P2247 error code.
• Data is freeze framed and vehicle speed, operating temperature, engine speed, and operating time is checked for when the code was detected.
• A road test is performed with a scan tool installed in the OBD-II port to confirm an issue is present.
• Visually inspect the wiring on both oxygen sensors for damaged/broken wiring, swapped connectors, or wiring shorted to ground or power.
• Use a multimeter to check that no wiring the distorted or short.
• Low grade replacement catalytic converters are susceptible to repeated failure and should be avoided and replaced with a quality one.
• Search technical service bulletins (TSB) in your vehicle information source. If you find one that matches the symptoms and code/s presented by the vehicle in question, it will very likely aid you in your diagnosis. TSB listings are compiled from thousands of successful repairs.
• If the engine is running efficiently, upstream O2 sensor data should fluctuate regularly between 1-millivolt (.100-volts) and 9-millivolts (.900-olts).
• Check for the car’s ECU (Engine Control Unit) and replace if needed.

Common Mistakes When Diagnosing the P2247 Code

Check of faulty wiring and connectors first. Avoid jumping straight to ECU for problems and it will give faulty test results. Follow the step by step diagnosis process at all times keeping in mind the specific make and model.

• Replacing Oxygen Sensor without checking problems with other components
• Replacing PCM directly
• Not checking for faulty/damaged wirings and connectors related to circuit and sensors