I have a 2007 chevy suburban. I have a [engine](/topics-e...


I have a 2007 chevy suburban. I have a [engine](/topics-engine-chevy/) code for oil pressure sensor. I replace oil pump and oil pressure sensor twice and check engine light is still on? Mechanic's Assistant: Does the light...

I have a 2007 chevy suburban. I have a [engine](/topics-engine-chevy/) code for oil pressure sensor. I replace oil pump and oil pressure sensor twice and check engine light is still on? Mechanic's Assistant: Does the light stay on, or does it blink? Stays on. I cant get my car inspected with the engine light on Mechanic's Assistant: What is the model of your '07 Chevy? Suburban 5.3 Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far? My mechanic has put oil pump in and replaced 2 oil pressure sensors


Ok
Automotive Expert
Hello and welcome! My name isCustomerand I can assist you with your question. I am a former master tech and I have worked in this field for 20 years. I specialize this type of problem you are experiencing so I am confident I can assist with this issue. I am sorry you are having this issue and I understand this can be frustrating so I will try my best to help. While we are working on this issue together, please allow up to 30 minutes (or more) between replies as I might be online helping other customers or offline spending time with family. Please understand I can only see what is on this page and what you have already shared with me. Please keep in mind, I don’t know the history of the vehicle and I don’t know your mechanical ability, however, I will try my best to help. The phone call prompts are automatic and are coming from the web site, not from me. If you would like to speak on the phone, please request a phone call on your end and I will call you right away. I am going to start by asking some basic questions to get up to caught up to where you are at with this situation so I can assist you in a timely manner. I appreciate your time and patience while we are working together on this issue. My goal is to provide you with a pleasant experience and ensure all of your questions are answered. Please reply back at anytime so I can fully answer or address any questions or concerns you may have. _Please download or save any documents or images I may send you as they will automatically expire after 7 days._ Can I start by getting the code stored in the computer and engine size please?

Code is for oil pressure sensor. Engine size is 5.3
Automotive Expert
Please send me the code number.

I do not have code on hand. I dont have a reader at this moment
Automotive Expert
Was it a P0521 code?
Automotive Expert
Without knowing all of the information like the vehicle history, the components that have been tested or replaced, the results of any tests that need to be run and without being there myself looking at the vehicle, it is hard to say exactly what is going on. I can only give you a general answer, but I hope this helps. Based on my experience, here are the possible causes. - Engine Control Module (ECM) - Instrument Panel Cluster (IPC) - Oil Pressure Relief Valve - Oil Pressure Sending (OPS) Switch Wiring - Oil Pressure Sending Switch Engine Oil Pressure Sender and Engine Oil Pressure Sender Screen are the most common out of the above possible causes. If the oil pressure send has been replaced, you may want to remove the Oil Pressure Sending sender and then remove the screen and verify it is clean. If not, clean or replace it as needed. If the screen is not the issue and the problem remains once checking or replacing the screen, install an oil pressure gauge and run the engine until the Instrument Panel Cluster gauge indicates low oil pressure. You can compare the mechanical gauge to the scanner value under live data. If the mechanical gauge indicates a normal value and the IPC indicates no pressure, disconnect the OPS jumper the Gray wire to the Tan/Black wire and check the scanner value.If a high pressure/voltage value is indicated, replace the OPS. If there is no actual oil pressure indicated on the mechanical gauge, check for failed bearings. It has been a pleasure working with you so far. Keep in mind this is a “starting point”. We can always continue as needed at a later date or at any time. Feel free to run some tests and reply back for further assistance as needed. My goal is to provide you with excellent service. If you have follow-up questions on this same topic, please use the reply box below. To start a new conversation with me on a new topic, you can [request me here](http://www.engine-misfire.com/justanswer-downloads/). Glad I can help. Please let me know if you have any further questions. Thanks and have a great day!

What others are asking

Oil leak.
I would start out by taking a large piece of cardboard and park your car over it over night, by looking at the drips on the cardboard this will tell you roughly where the drips are coming from. Sometimes drips...
How do I select a song from the list?
You can control your iPod with the sound system controls to help you choose a song. To view all of the songs and choose which one to play, follow these steps: Press the Menu button. Rotate the Tune-Scroll knob to...
Car idling erratically
Hello. The erratic idling could be caused by several things: You could have a bad mass air flow sensor, the throttle position sensor could be bad, or the idle air control valve could be bad. This could also be an...
Gas smell around car
As a safety precaution do not park the vehicle in the garage until the problem is fixed. The gas tank is made out of plastic and you may have a leaking tank or fuel line. The easiest thing to check...
Car lost all power after downshifting to go uphill
Hello! Although the Check Engine Light has been on before a new issue may have occurred, I would suggest hooking a scan tool up to the vehicle (https://www.yourmechanic.com/article/how-to-read-and-understand-check-engine-light-codes-by-jason-unrau) and retrieving the OBD2 codes. The problem you're having should almost certainly...
What other damages occur when the idler pulley freezes?
An idler pulley will never prevent an engine from ever running again. An idler pulley just has a ball bearing inside of it that can dry out over time causing it to get hot. If the issue is not resolved...
I have V8 4.6 Eddie Bauer Explorer. When I take off, at the end of first and second gear there's a rattle noise.
The noise you may be hearing is a pre ignition ping caused by a combination of a lean fuel to air mixture and advanced ignition timing. The most common cause of this engine pinging noise (https://www.yourmechanic.com/services/engine-is-running-louder-than-normal-inspection). You should first have...
Cars light and everything turns on but won't start and no nose
Be sure not to remove the battery cables if and once the vehicle is running. Removal of the battery from the circuit at that time can cause a voltage excursion which will damage the PCM (powertrain control module or "vehicle...
Is this my battery or alternator?
This may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while...