P2268 - OBD Trouble Code
OBD Code P2268 - Water in Fuel Sensor Circuit Intermittent
The trouble code P2268 can be
explicated as Water in Fuel Sensor Circuit Intermittent. If the engine control
module would detect a variation in the voltage coming from the water in fuel
sensor circuit delivered performance that is outside the parameters set by the
automobile manufacturer, then it would store the P2268 fault code. This would
give rise to the flashing up of the check engine light.
Learn More About OBD Error Code P2268
The fuel sensor detects fuel (ethanol) contamination and at the
same time it provides the engine control module (ECM) with a fuel temperature.
The water in fuel circuit is monitored by the engine control module and has
detected the return voltage to be above or below threshold limits for the
sensor. This diagnostic fault code is a generic powertrain code, which means
that it would apply to the OBD-II equipped vehicles. The specific repair steps
can vary as it depends upon the vehicle make and model. The engine control
module, powertrain control module or the transmission control module monitors
this circuit depending upon the particular automobile.
What causes this problem with the Water in Fuel Sensor Circuit
Intermittent?
- Defective water in fuel sensor
- The fuel might get polluted
- Issues in the fuse or fuse-able link
- There can be inoperative fuel filter
- The connector might be damaged
- Quirks in the wiring
- Unusable ECU
Replace/Repair These Parts To Fix Code P2268
- Fuel Tank Pressure Sensor - The fuel tank pressure sensor helps in many ways, most importantly by saving fuel, minimizing environmental pollution, and preventing damage to the engine. The pressure sensor, which is normally positioned inside or on top of the tank, works to detect the pressure in the fuel system, with the end goal of identifying leaks and defective gas caps. Thus, replace faulty sensor now!
- Engine Control Module - Want to know the most common reason behind the failure in the engine control module? Corrosion or damage because of moisture can cause ECM failure. Corrosion might enter the ECM through the wiring harness and moisture can enter by a failure in the seals in the ECM itself.
- Powertrain Control Module - The PCM makes the engine and transmission work in tandem. Any issue with the powertrain control module will cause major problems with the efficient running of the vehicle.
- Fuel Sender Connector - If the connector is damaged, it should be immediately replaced as it can cause leakages and reduce the power output as well. This will also result in engine lean and rich conditions also. Thus, replace faulty sender connector now!
- Electronic Control Unit - If your vehicle fails to start for no apparent reason, this is also a good indicator that there can be some issues with the ECU. If you check the car battery, starter and other common electrical components, and the vehicle still does not start, a quirky electronic control unit should be the next logical thing to consider.
- Fuel Pressure Regulator - Without the fuel pressure regulator, the fuel rail will not be able to build up enough pressure to support the injectors with the sufficient amount of fuel, the fuel will instead flow straight through and not reach the injectors. Thus, replace faulty pressure regulator now!
- Diagnostic Tool - In order to fix these errors, you need few diagnostic tools to get your car problems pointed out easily. Our diagnostic tools collection will come handy to do so and resolve all your vehicle problems. Visit today!
Symptoms Of The OBD Error Code P2268
It is vital to know the symptoms of
an issue as only then you would be able to solve the problem. So that’s why we
have listed out some major symptoms of OBD Code P2268 here:
Common Symptoms
- Check engine light might come into
signal
- Engine might hold back
- Sometimes there might be misfiring
- Engine might not activate
- Unacceptable fuel economy
- Inferior performance
- Illumination in the water in fuel
light
How To Correct Water in Fuel Sensor Circuit Intermittent Issue
The repairs which you
will have to do to correct this fault code are simply straightforward; you can
surely pinpoint the necessary repairs on the basis of your diagnosis. Have a
look at some common fixes:
- It is essential to
restore the flawed electronic control unit
- It is important to clean
the corrosion from connectors
- Repair or replace the
contaminated fuel
- Rehabilitate the
defaults in the wiring
- The malfunctioning fuel
filter should be repaired or replaced as per the need
- Carefully adjust the
faults in the blown fuse or fuse-able link
- Recondition the non-functioning water in fuel sensor
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Easy Diagnosis Of Engine Error OBD Code P2268
Here are some steps which you should follow in order to diagnose this fault code:
- This is a general type of error code which is diagnosed with the help of a scanner.
- The mechanic will insert a scanner to diagnostic port of the vehicle and recover the codes and freeze frame data.
- If he happens to find any additional error codes, he has to address them as well.
- Once it is done, he has to reset the vehicle, and then test drive to see if the error code appears.
- If the error code does not return, then there can be an erratic condition.
- Then after that the next step would be to inspect the records of the automobile to check when the fuel filter was restored and then the condition of the filter should be visually inspected.
- This error code is generally caused due to faulty fuel filter or contaminated fuel. Utilize a glass jar to perform the visual inspection of the fuel.
- Now once the sample has been taken, it is essential to allow it to settle down and then the fuel would separate in a matter of minutes.
- If water is present in the fuel, then it would indicate that the fuel is contaminated, a faulty fuel filter or there might be both of them.
- Then the mechanic should find all the constituents in the water in fuel circuit and perform a thorough visual inspection to inspect the related wiring for obvious defects such as scraping, rubbing, bare wires, or burn spots.
- After that examine the connectors for security, corrosion and damaged pins. The sensor is generally mounted on the top of the fuel tank on many automobiles.
- The advanced steps become very automobile specific and need the appropriate advanced equipment to perform correctly.
- A digital multimeter and the particular technical references for the vehicle would be needed to carry out these procedures.
- The tool which would be perfect to utilize in this particular situation is an oscilloscope.
- The O-scope will provide a correct illustration of the signal pulses and the frequency levels that will be proportional to the fuel contamination level.
- The typical range of frequency is from 50 to 150 hertz; with 50 hertz which represents clean fuel and 150 Hertz represents a high level of contamination.
- Voltage needs as well as signal pulses will differ depending on the particular year and model of the automobile.
- The water in fuel sensor is generally supplied with a voltage reference of approximately 5-volts from the powertrain control module.
- If this process identifies the lack of a power source or ground, then there would be a need of continuity testing to inspect the integrity of the wiring, connectors as well as other constituents.
- Make sure to remove the power from the circuit and the normal readings for wiring and connections should be 0 ohms of resistance while performing continuity tests.
- Resistance or no continuity would indicate defective wiring that is opened or shorted and it should be repaired or restored carefully.
Common Mistakes When Diagnosing The P2268 Code
- A lot of technicians might replace the PCM or water in fuel sensor when faulty wiring or contaminated fuel is the actual cause of the issue.