P2242 - OBD Trouble Code

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When a P2242 trouble code sets it means that the Powertrain Control Module has detected a fault, specifically high voltage, on the heater control circuit for the bank two sensor one oxygen sensor.

If you notice a lean or risk condition in the engine, decreased fuel efficiency, black smoke from the taillight, and/or illuminated Check Engine Light on the dashboard, them there is a major possibility that you are dealing with the OBD Code P2242 with your vehicle.

Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) should reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the sensor reaches that temperature the faster it starts sending an accurate signal to the Engine Control Module (ECM). In order to achieve the required temperature, a heater element is included inside the heated oxygen sensor. The purpose of the oxygen sensor is to measure the oxygen content in the exhaust gases after they leave the combustion process of the engine. The oxygen sensor must be at a certain temperature in order for this information to be accurate. The oxygen sensor has a heater wire inside to help bring the sensor up to temperature quicker. When the PCM detects the heater wire is not operating or there’s a lean condition in the exhaust (too much oxygen), it will set code P2242.

What causes this problem with the O2 Sensor Positive Current Control Circuit High Bank 2 Sensor 1?

• Heated Oxygen Sensor wiring/harness is open or short
• Problem with electrical connections to the Oxygen Sensor
• Faulty or damaged Heated Oxygen Sensor
• Blown circuit fuse of the sensor
• ECM/PCM fault or failure to detect and interpret data
• Leakages in the fuel delivery systems and exhaust systems

1. Exhaust Gas Recirculation Valve - Did you just see check engine light flashing on your dashboard? If the computer would detect some fault with the automobile’s EGR valve circuit, then it would set up the check engine light so that the driver is notified about the fault. Don’t waste time and get them replaced or else this fault code can turn up.
2. Diesel Exhaust Fluid Pump - The diesel exhaust fluid pump needs to work properly if the transmission system has to perform. 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!
3. Engine Control Module - Is your car engine light still staying ON after resetting or your car engine is turning off for no reason? Then these are some common symptoms indicating that your car engine control module is defective.
4. Powertrain Control Module - The PCM works as the central computer system in an automobile’s mechanism. This auto part is the in charge of all the constituents as well as the functions performed by them. Having such enormous importance in the operation of all the parts means that any defect in it will affect almost every aspect of a car.
5. Fuel Injector - If there is a leakage in the fuel injectors, then it might cause rise in the fuel consumption, fuel odorous around the vehicle and hard starting. You can always rely on us as we have best auto parts for our customers.
6. Electronic Control Unit - The ECU is a major component of your car's on-board computer. It's used to regulate many systems and subsystems in your car's engine, drive train and other major components. Visit us to buy best quality ECU online.
7. Diagnostic Tools - Take help of a professional mechanic to diagnose OBD code error. Use high grade diagnostic tools to resolve this issue. Buy new tools and equipment form us!
8. Fluid Pump - The fluid pump is usually located in the cover of the transmission. It draws fluid from a pump in the bottom of the transmission and feeds it to the hydraulic system. It also feeds the transmission cooler and the torque converter. Thus, replace faulty fluid pump now!
9. Engine Coolant Temperature Sensor - Did you just see black smoke coming out from your vehicle’s exhaust? Black smoke is an indication that you should not drive your vehicle as there might be some fault in the engine coolant temperature sensor. Buy engine coolant temperature sensor from us online at affordable prices.
10. Heated Oxygen Sensor - A faulty sensor will not be able to perform properly and not analyses the air to fuel ratio in the exhaust. Visit us today to replace damaged oxygen sensors.

If you are facing OBD error code P2242, then there are significant common symptoms that can be felt or observed. We have worked out a list here to help you out in understanding this problem better.

Common Symptoms

• Check Engine Light flashing in the display monitor
• ECM indicating the stored error code
• Exponential increase in the fuel consumption pattern
• Rough engine with occasional stalling
• Lack of power and acceleration due to failure of fuel delivery system
• Black or white smoke coming from the tailpipe

It is very important to fix the fault code P2242. So here are some ways with which you can correct this issue:

• Oxygen Sensor Replacement
• MAP Sensor Replacement
• MAF Sensor Replacement
• Fuel Pump Replacement

However, if you face any issue then we have stocked a wide range of best priced PCM, Oxygen Sensor, Digital Volt, Ohmmeter, Wiring Harness, Exhaust System, Exhaust Gases, Exhaust Leak and more to help you out in fixing your car.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

P2242 can be a simple code to diagnose when all diagnostic steps are followed in the proper order and all tests are performed. A professional level scan tool that shows live sensor data will be required to properly diagnose any faults present.

• A suitable OBD-II scanner (or code reader) and a digital volt/ohmmeter will be most helpful in performing a successful diagnosis.
• Begin with a visual inspection of all wiring and connectors and repair or replace damaged, disconnected, shorted, or corroded wiring, connectors, and components as necessary.
• Always retest the system after repairs are completed to ensure success. If all system wiring, connectors, and components (Including fuses) appear to be in normal working order, connect the scanner (or code reader) to the diagnostic connector and record all stored codes and freeze frame data.
• Continue by clearing the code and operating the vehicle to see if it returns. This will help to determine whether or not the malfunction is intermittent.
• Test drive the vehicle afterwards to ensure that a successful repair was performed. If the oxygen sensor conforms to the manufacturer’s specifications, prepare to test system circuits for resistance and continuity by disconnecting the electrical connector/s from all related control modules (especially the PCM)
• Compare your actual findings with manufacturer’s specifications and repair or replace circuits, components, or connectors as required
• Once the repairs are made, clear the codes and test drive the vehicle to ensure that the repair was successful. If oxygen sensor and system circuits are comparable to the manufacturer’s specs, suspect a defective PCM (or other related controller).

Common Mistakes When Diagnosing the P2242 Code

Any quality mechanic will own a scan tool capable of reading live sensor data. When the heater circuit is found to have failed for the oxygen sensor, the sensor must be replaced. The heater is internal to the sensor and is replaced as a single unit. Thus, proper checks are mandatory to avoid unnecessary problems in the future and spending unnecessary money on repairs.