Error Code P2542: What It Means & What To Do?

<<See All OBD Codes

The trouble code P2542 can be described as Low Pressure Fuel System Sensor Circuit High. 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. This would also give rise to the illumination of the check engine light.

1. Fuel Tank Pressure Sensor - The pressure sensor is important component that informs the PCM about the optimal fuel pressures and helps in managing the air to fuel ratios for maximum performance and fuel efficiency. Thus, buy new pressure sensor now!
2. Engine Control Module - It is not always the components, but the ECM that can also be faulty. It can cause misinterpretation of correct data thus leading to wrong operational decisions which will affect the transmission and overall engine performance. Thus, replace faulty module and reprogram it now!
3. Fuel Sender Connector - Faulty connectors will cause imperfect fuel delivery will can cause lean or rich engine condition. This will hamper the power output and exhaust system also. Thus, replace it now!
4. Powertrain Control Module - Powertrain Control Module can also be faulty in rare cases and thus needs through checks for system and software errors. Thus check and replace it, if required.
5. Fuel Injector - Bad or clogged fuel injector can cause repeated engine stalling, engine misfires, lack of power, and excessive smoke from the exhaust. Thus, it needs to be replaced immediately. Buy new fuel injector now!
6. Electronic Control Unit - The ECU manages the cooling system to control the battery operating temperatures and thus must be replaced, if found faulty. Thus, buy new ECU modules and components from us!
7. Diagnostic Tool - Make use of quality diagnostic tools to resolve any OBD error code. Buy quality diagnostic tools from us!

We care for our customers and that’s why we can totally understand your problem. That’s the reason why we have listed out some major symptoms behind the flashing up of OBD Code P2542. They are mentioned here as follows:

Common Symptoms

• Check engine light can start flashing up
• Existence of no start condition
• Longer than common crank times
• Hesitation while acceleration
• Reduced fuel economy

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P2542:

• The fuel pump connector should be restored to working order
• Recondition the non-functioning ECU
• Adjust the flawed fuel filter
• You must fix the defective fuel pump
• Make sure to mend the faulty fuel pump relay
• It is essential to restore the flawed FP sensor
• Repair or replace the quirky fuel injector
• Rehabilitate the defaults in the PCM/ECM
• The malfunctioning fuel pressure gauge should be repaired or replaced as per the need

Now are you thinking that from where will you purchase these car parts? You have arrived at the right place. We at Parts Avatar care for our customers, that’s why we provide best quality of pcm, ecm, fuel pump, oil filter, fuel injector, fuel filter, fuel pressure gauge, fuel pump relay, fuel pump connector, automatic transmission module, pcm module, ecm module at marketable prices.

Do you wish to diagnose P2542 error code easily? Here are some steps which you should follow in order to diagnose this fault code:

Make sure to consult your vehicle information source for technical service bulletins (TSB) that replicate the code stored, vehicle (year, make, model, and engine), and symptoms exhibited. If you find the appropriate TSB, it may yield helpful diagnostic information. A diagnostic scanner and a digital volt/ohmmeter will be necessary to accurately diagnose a code P2542. A reliable source of vehicle information will also be needed. Then the next step would be to locate the FPS sensor on your specific vehicle. This sensor is generally found directly screwed / mounted into the fuel rail, close to the injectors and the intake manifold. Now once it has been located, then the connector and wiring should be visually inspected. Search for scraping, rubbing, bare wires, burn spots or melted plastic. The connector should be pulled apart and carefully examine the terminals (the metal parts) which are inside the connector. See if they look burned or have a green tint indicating corrosion. Use electrical contact cleaner and a plastic bristle brush if cleaning of the terminals is required. It should then be allowed to dry and apply electrical grease where the terminals contact.

Now if you have a scan tool, then the diagnostic trouble codes from memory should be cleared and then see if the P2542 code returns. If it is not returning, then it would mean that there are some issues in the connections. If the P2542 code returns, then insure that you have good fuel pressure by checking with a mechanical gauge. Then check it with the specifications set by the manufacturer for your vehicle. If the fuel pressure and volume do not pass, then restore the fuel pump and all the codes should be cleared and retested. If the P2542 is now gone, then the issue was mechanical. If the P2542 code does return, we will need to examine the FPS sensor as well as it related circuits. With the Key Off, then the electrical connector at the FP sensor should be disconnected. Then connect a Digital Voltmeter black lead to the ground terminal at the FP sensor wiring harness connector.

Then the next step is to Turn Key On Engine Off. Inspect the manufacturer’s specifications; voltmeter should read either 12 volts or 5 volts. If not, then you should repair open in wiring on the power or ground wire, or restore the PCM. If the prior test passed, then there would be a need to check the signal wire. With the connector still disconnected, move the red lead of the voltmeter from the power wire terminal to the signal wire terminal. The voltmeter should now read 5 volts. If not, repair the open on the signal wire, or the powertrain control module should be replaced. If all prior tests have passed and you continue to get a P2542, this would most likely indicate a failure in the FPS sensor, although a failed PCM could not be ruled out until the FPS sensor had been replaced. If unsure, then you should seek assistance from a trained automotive diagnostician. PCMs should be programmed, or calibrated to the automobile in order to be to be installed in the right manner.

Common Mistakes When Diagnosing The P2542 Code

• The fuel pressure sensor might start failing
• Non observance of the powertrain control module
• Some issues with the car wiring