P052E OBD Error Code: Problem & Solutions

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The variable camshaft timing position for an over-advanced camshaft timing is monitored by the powertrain control module during cold start up. If the camshaft timing will exceed a maximum calibrated value or might remain in an advanced position, then the test would fail.

 

The P052E trouble code can be defined as Positive Crankcase Ventilation Regulator Valve Performance.

The vehicle’s engine ignition system, mechanical positioning of the rotating assemblies, fuel injection, emission systems, exhaust, transmission and many more are managed and monitored by the engine control module. One another main system which is monitored and adjusted properly by the engine control module is the variable valve timing system.

 

It would allow the engine control module to monitor the mechanical timing between the camshaft and the crankshaft. This would increase the general efficiency in the operation of the engine. At the same time there would be a benefit in the overall fuel economy.

 

What causes this problem with the Positive Crankcase Ventilation Regulator Valve Performance?

 

• Quirks in the crankcase pressure sensor
• PCV regulator valve/crankcase pressure sensor wiring might be opened or shorted
• There can be a PCM malfunction or PCM programming error
• Some faults in the PCV regulator valve
• The PCV valve might be defective

1. PCV Valve - OBD Code P052E can appear because of faulty PCV Valve.
2. Fuel Pressure Sensor - There can be some issues with the Fuel Pressure Sensor due to which you may see P052E code appearing over and over again. Visit us to buy best quality Fuel Pressure Sensor online.
3. Powertrain Control Module - Are you facing some faults in your Powertrain Control Module? Don’t worry and get them replaced or else P052E code can turn up.
4. Oil Pressure Sender - Common cause behind this P052E error code can be some fault in Oil Pressure Sender. So, it will be a good decision to replace them now.
5. Ambient Air Temperature Sensor - Powertrain Control Module is perfectly fine but still but having that trouble code P052E flashing? In such a situation your Ambient Air Temperature Sensor might be faulty. Why don’t you think of getting that replaced?
6. Engine Control Module - The P052E code can also arise due to some issues in Engine Control Module. So, it is advised to replace them as soon as possible.
7. Crankshaft Position Sensor - P052E code does not really end up spoiling your Engine Control Module, but it might also accompany few Crankshaft Position Sensor issues. We have best Crankshaft Position Sensor with us.
8. Camshaft Position Sensor - Are you facing OBD Error Code P052E? Don’t worry as you can fix this issue with new Camshaft Position Sensor. We care for our customers, that’s why we have Camshaft Position Sensor for every make and model.

It is essential 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 P052E here:

 

Common Symptoms

 

• There can be a hissing noise from engine area
• Engine oil might start leaking
• Smoke (steam) can start coming from under hood area
• A vacuum leak might create drivability issues

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 P052E:

 

• First of all, you must replace the defective crankcase pressure sensor
• Replace or repair the faulty PCV regulator valve
• Make sure to restore the PCV valve is found defective
• If the PCV regulator valve/crankcase pressure sensor wiring is opened or shorted, then it should be corrected
• Correct PCM programming error

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If you want to easily diagnose this trouble code, then you must follow the steps which are mentioned here as below:

 

If you are diagnosing a code P052E, then you will need a manual vacuum pressure gauge, a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable source of vehicle information. A manual vacuum pressure test should be performed prior to diagnosing any insufficient crankcase pressure/PCV related codes. If the engine fails to produce enough vacuum, it must be repaired before moving forward with your diagnosis. To conduct a manual vacuum pressure test, disconnect the PCV vacuum hose and attach your vacuum pressure gauge to it. Your vehicle information resource should yield specifications regarding minimum engine vacuum

 

Carefully inspect all PCV hoses for signs of cracking or breakage and make repairs as necessary. Cracked or collapsed PCV vacuum hoses may contribute to the conditions which caused the P052E to be stored

 

If the engine is in good working order and there are no vacuum leaks, continue with a visual inspection of all PCV regulator valve and crankcase pressure sensor wiring and connectors. Make repairs as needed. Then connect the scanner to the vehicle diagnostic port and retrieve all stored codes and freeze frame data. Writing this information down may aid you as your diagnosis unfolds. After that, clear the codes and test-drive the vehicle to see if the code is reset

 

Utilize your vehicle information resource to obtain connector face views, wiring diagrams, connector pinout charts, component testing procedures and specifications. All this information will be required to proceed with your diagnosis

 

Test PCV regulator valve and circuits (KOEO)

 

• Use the scanner to manually activate the PCV regulator valve
• Probe the power supply circuit for the PCV regulator valve with the positive test lead of the DVOM
• Utilize the negative test lead to test the PCV regulator valve ground
• If there is battery voltage at the PCV regulator valve connector, suspect that the valve is defective
• You may test the valve using the DVOM
• If it fails to comply with recommended specifications, it is definitely no good
• If there is no voltage at the PCV regulator valve connector, proceed to the next step

Test for a PCV regulator valve voltage output circuit at the PCM connector

 

• Use the positive test lead of the DVOM to probe PCV regulator valve output voltage at the PCM connector
• The negative test lead should be connected to a known good ground
• If there is an output voltage signal at the PCM connector, that is not present at the regulator valve connector, you have an open circuit between the two
• If there is no PCV regulator valve output signal present at the PCM connector, proceed to the next step

Test the crankshaft pressure sensor using the DVOM

 

• With the key on and engine off (KOEO), place the DVOM on the ohms setting and follow manufacturer’s procedures/specifications for testing the crankcase pressure sensor with the connector unplugged
• If the sensor in question does not comply with manufacturer’s specifications, it should be considered defective
• If the sensor does comply with manufacturer’s specifications, move on to the next step

Use the DVOM to test for reference voltage (typically 5-volts) and a ground at the crankcase pressure sensor connector

 

• With the KOEO and the crankcase pressure sensor unplugged, probe the reference voltage pin of the sensor connector with the positive test lead of the DVOM
• Connect the negative test lead to the ground pin of the connector to test the entire circuit
• If there is no reference voltage detected at the sensor connector, locate the PCM and test the corresponding circuit at the PCM connector. Use the positive test lead of the DVOM
• The negative test lead should be connected to a known good ground for this test
• If there is no reference voltage at the PCM connector, suspect PCM failure or a programming error
• If there is no ground at the sensor connector, use your source of vehicle information to locate the ground source and make sure that it is securely fastened to the engine block or battery
• If there is reference voltage and ground at the crankcase pressure sensor connector, proceed to the next step

Test crankcase pressure sensor signal circuit voltage using the DVOM

 

• With the key on engine running (KOER) and the crankcase pressure sensor reconnected, use the positive lead of the DVOM to probe sensor signal voltage right behind the connector
• The negative test lead should again be connected to a battery ground
• Use the vacuum pressure gauge to obtain correct crankcase pressure and compare sensor signal voltage to the pressure-to-voltage chart in your vehicle info resource
• If crankcase pressure sensor signal voltage is incorrect, consider the sensor faulty
• If crankcase pressure sensor signal voltage (at the sensor connector) reflects the correct degree of voltage, proceed to the next step

Test the crankcase pressure sensor signal circuit at the PCM connector

 

• With the KOER, use the DVOM positive test lead to probe the crankcase pressure sensor signal circuit at the PCM connector
• The negative test lead should be connected to a battery ground
• If a correct crankcase pressure sensor signal is discovered at the sensor connector but not at the corresponding circuit of the PCM connector, suspect that there is an open circuit between the two