Code P0521 Chevrolet Tech Notes. DTC P0521 can be set if engine oil pressure is outside the calculated engine oil pressure model stored in the engine control module. This can be an indication of mechanical engine issues causing lower than expected engine oil pressure. There is a factory service bulletin for the following Chevrolet models:Low oil pressure, P0521. So I have been struggling with an oil pressure issue on my 09 5.3 LC9, an almost constant P0521. I bought the truck in March, and have not been driving it much until recently now that it is camping season. Things I have done...first was a sensor and screen on the VLOM, no change. 3 oil changes with Mobil 1 5w30 and ...This is a technical service bulletin (TSB) issued by the National Highway Traffic Safety Administration (NHTSA) for certain 2019-2020 Ford F-150 vehicles. The TSB provides information on how to diagnose and repair a possible defect in the battery terminal fastener. The defect may cause a loss of electrical power, affecting the vehicle's performance and …P0521 is an OBD2 diagnostic code that is triggered when your Chevy Traverse detects that the value being sent from the oil pressure sensor is out of its normal operating range. It is typically caused by a bad oil pressure sensor or an issue with the oil system, and should be diagnosed and fixed right away. While it is possible (and even likely ...December 12, 2019 by Jason. P0521 is an OBD2 diagnostic code that is triggered when your Chevy Tahoe detects that the value being sent from the oil pressure sensor is out of its normal operating range. It is typically caused by a bad oil pressure sensor or an issue with the oil system, and should be diagnosed and fixed right away.Nov 29, 2021 · How to locate and replace the oil pressure sensor on a Chevy Silverado, or GMC Sierra. See below for some additional info on diagnosing and repairing this i... P06DD code - The engine oil pump features seven vanes and a moving element that continuously adjust to maintain a regulated oil pressure supply by varying the displacement of the pump. The pump has two regulated pressure stages of operation controlled by an on/off solenoid. Low pressure mode regulation (solenoid on) is …Support My Channel! Paypal - [email protected] / Cashapp - $cdarnauParts NeededOil pressure sensor - http://amzn.to/2D4yg5DOil pressure sensor filter- http://a...Chevrolet Trailblazer (Vin M) 2021 2021 Involved Region or Country North America Condition Some customers may comment that the MIL is illuminated Some technicians may find DTC P146F (EVAP Purge System Pressure Sensor Performance) set in the Engine Control Module (ECM). CorrectionLabor: 1.0. To diagnose the P00C7 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.Here are the most common symptoms of P0521: 1. Low Oil Light/Gauge- While P0521 is often caused by a bad oil pressure sensor, you should treat the readings from the oil pressure gauge and low oil warning as though they are correct until you know better. 2. Ticking and Knocking-If your engine is ticking and … See moreDec 12, 2019 · December 12, 2019 by Jason. P0521 is an OBD2 diagnostic code that is triggered when your Chevy Tahoe detects that the value being sent from the oil pressure sensor is out of its normal operating range. It is typically caused by a bad oil pressure sensor or an issue with the oil system, and should be diagnosed and fixed right away. Help!! 2013 malibu ltz 2.5 with error code P0521 (engine oil pressure sensor range/performance.) bell sounds with Stop Engine Immediately, low oil pressure...Faulty Engine Oil Pressure Sensor. Engine Oil Pressure Sensor harness is open or shorted. Engine Oil Pressure Sensor circuit poor electrical connection. Engine Mechanical Problem. Faulty Engine Control Module (ECM) What does this mean? Code P0521 Tech Notes.Labor: 1.0. To diagnose the P0522 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.Apr 18, 2014 · satisfied customers. P0523 and p0521, 2007 chevy Tahoe 5.3l vortec, so far just. so far just trying to figure out the oil pressure sensor location and feasibility of doing it myself … read more. To set the timer on a Malibu Lighting transformer, users should first turn the dial until the arrow lines up with the correct current time, then set the green tripper at the time they want the lights to turn on and the red tripper to the ti...All-New Next Generation 2025 CHEVY MALIBU coming as ICE in 2024... coded as 9DSC-L on Autostop_ Car reviews by Autostop.A 2025 Chevy Malibu, as Next Gen Chev...That’s exactly what we’re going to cover on this page. First things first, P0520 is a generic OBD2 code. That means it applies to all brands and models of vehicles that were manufactured after 1996. While it appears more often on GMC, Dodge, Chevrolet, Mercedes and Cadillac, pretty much any car can throw you this code. P0520 Code DefinitionOverview of ho to fix a P0521 Code on a Silverado, Sierra, Tahoe. Chevy engine type, including the 4.3L, 5.3L, and 6.2L.Oil Pressure Switch Socket: https://a...Aug 20, 2020 · If a MECH A NIC video helped you consider donating to my patreon account to help support the channel. https://www.patreon.com/The_mech_a_nicor my paypal http... First check the oil and be sure it is at the correct level and not dirty. Next test or replace the oil sending unit/switch which is often the cause of a P0521 code. A new oil sending unit/switch is a low-cost item that can be bought at an auto parts store or online on Amazon or eBay. Example Chevrolet Oil Sending Unit/Switch on Amazon.Chevrolet Malibu 2016 2020 1.5L (RPO LFV) Involved Region or Country North America and China Condition Some customers may comment on one or more of the following conditions when driving in extremely cold weather conditions (-18°C or less / 0°F or less): • Loss of power • Hesitation on acceleration • Stalling condition • MIL Illuminated JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals. >. Code P0521. Changes the oil pressure switch with an original. Still getting the same code - Answered by a verified Chevy Mechanic.P0521 is an OBD2 diagnostic code that is triggered when your Chevy Silverado detects that the value being sent from the oil pressure sensor is out of its normal operating range.. It is typically caused by a bad oil pressure sensor or an issue with the oil system, and should be diagnosed and fixed right away. While it is possible (and even …Mar 28, 2018 · JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals. >. Code P0521. Changes the oil pressure switch with an original. Still getting the same code - Answered by a verified Chevy Mechanic. Chevrolet Silverado 1500 (New Model) 2019 2019 Equipped with 5.3L L82, 5.3L L84, 6.2L ... P0237 P0340 P0341 P0355 P0365 P037C P03F0 P0521 P0480 P0522 P0532 P0606 Dec 16, 2014 · Note: I own a 2007 Chevrolet Tahoe, Active Fuel Management system, 2wd - 5.3L "J" 127K Miles. Non Flex Fuel. Non Flex Fuel. If it is an aftermarket alarm and remote start, it's possible the installer may have tapped into something they shouldn't have, then when the alarm shorted, it may have caused these or some other electrically related issues. Apr 22, 2020 · Silverado 5.3 liter engine 07-13 fix for code P0521. First check to make sure you are not low on oil. Then check the wires to the sensor. Then replace the ... Asked by prosborn76 Jan 16, 2015 at 01:12 PM about the 2012 Chevrolet Silverado 1500 LTZ Crew Cab 4WD. Question type: Maintenance & RepairLabor: 1.0. To diagnose the P0523 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.Code P0521 Chevrolet Tech Notes. DTC P0521 can be set if engine oil pressure is outside the calculated engine oil pressure model stored in the engine control module. This can be an indication of mechanical engine issues causing lower than expected engine oil pressure. There is a factory service bulletin for the following Chevrolet models:This specific P0521 engine code is triggered when the PCM sees an unexpected value in the engine oil pressure sender/sensor. It could be out of it's normal range or could be fixed when it should fluctuate. For this P0521 trouble code, the cause may be mechanical or electrical, but is more than likely electrical related.Overview of ho to fix a P0521 Code on a Silverado, Sierra, Tahoe. Chevy engine type, including the 4.3L, 5.3L, and 6.2L.Oil Pressure Switch Socket: https://a...2007 Chevy Suburban P0641 P1682 - Reduced Engine Power Trying to make sense of the dreaded Reduced Engine Power scenario, along with Stabiltrak and traction control messages. The first hit was 3 days ago and was triggered while going up a steep canyon road. Turned off and let sit for a few minutes and turned back on and made it to my …Jan 28, 2022 · PIP5276D Chevrolet Technical Service Bulletin. PIP5276D. PIP5276D. Ses Lamp P0521 Setting After An Oil Change And Or Low Oil Pressure Indicated On The Instrument Panel. Cab & Chassis Silverado 3500. Cab & Chassis Silverado 3500 HD. Camaro ZL1. Chevy Express G1500. Chevy Express G2500. The antilock braking system in a Chevrolet Malibu may come on when there is a condition in the braking system causing a fault. For instance, the light may come on when there is not enough fluid in the antilock braking system reservoir.Labor: 1.0. To diagnose the P0522 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.The OBD code P1101 is a trouble code that appears when the Power Control Module (PCM) detects a fault within the Mass Air Flow (MAF) sensor system. When this code sets, the PCM detects a ...Chevrolet Trailblazer (Vin M) 2021 2021 Involved Region or Country North America Condition Some customers may comment that the MIL is illuminated Some technicians may find DTC P146F (EVAP Purge System Pressure Sensor Performance) set in the Engine Control Module (ECM). CorrectionOur service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. 1 (855) 347-2779 · [email protected]. Read FAQ. GET A QUOTE. P0513 code definition When the P0513 trouble code appears, it indicates that the powertrain control module has found an issue with the immobilizer key ID.This is a technical service bulletin (TSB) issued by the National Highway Traffic Safety Administration (NHTSA) for certain 2019-2020 Ford F-150 vehicles. The TSB provides information on how to diagnose and repair a possible defect in the battery terminal fastener. The defect may cause a loss of electrical power, affecting the vehicle's performance and safety. The TSB also includes the ...2007-2009 Chevrolet Tahoe with the Police Package. • On the 2008-2009 Pontiac G8, 2010-2011 Camaro, and 2007-2010 Full Size Trucks with AFM, also determine if the AFM pressure relief valve shield that is listed in the latest version of 10-06-01-008 has ever been installed for anything else. If not, remove the oil pan and install the AFM shield.What you should do if you get P2101 reduced engine power message on in your dashIn this video, I will show you what you should do if your GMC, Ford, or Chrys...Depending on the component to be replaced and the amount of labor involved, fixing a P0507 code can cost between $150-$500 on average. Here are the average rates of some common components. Throttle Cable adjustment: …Do you have a 2007-2008 Chevy Avalanche, Silverado or GMC Sierra and are experiencing an illuminated check engine light and stored code P0121 and possibly a ...P0521 Oil Pressure sensor SOLVED!!! Chevy Malibu 2013 2.5L - YouTube. 0:00 / 2:16. P0521 Oil Pressure sensor SOLVED!!! Chevy Malibu 2013 2.5L. Señorial Equizio. 380 subscribers. Subscribe. 3....Brian Onyango Updated on August 15, 2022 When the check engine light comes on in your Chevy Silverado, it may be because of the P0521 code. In today's post, we explain what that means, the common causes of this error code, and how to fix it. The P0521 code is for the power steering pressure sensor circuit high input.Save up to $12,750 on one of 6,419 used 2021 Chevrolet Malibus in Toledo, OH. Find your perfect car with Edmunds expert reviews, car comparisons, and pricing tools.P0521 is an OBD2 diagnostic code that is triggered when your Chevy Silverado detects that the value being sent from the oil pressure sensor is out of its normal operating range. It is typically caused by a bad oil pressure sensor or an issue with the oil system, and should be diagnosed and fixed right.Nella nostra esperienza il codice motore P0521 appare più spesso su Chevrolet, Dodge, GMC, Mercedes Benz, Pontiac e Cadillac, ma si applica a qualsiasi marca/modello. Che cosa significa il codice di errore P0521? Il computer principale del veicolo chiamato Powertrain Control Module (PCM) controlla molti sensori, controlli ed …The P2127 code means that the throttle or pedal position sensor switch E has a low input. The pedal position sensor is a sensor found on the gas pedal. The sensor tells the ECU when the gas pedal is depressed and how far it is depressed. When the ECU detects a low input from the pedal, it will trigger the Check Engine Light and the code P2127.The diagnostic trouble code (DTC) P0521 indicates “Engine Oil Pressure Sensor/Switch Range/Performance.” The powertrain control module (PCM) will set this code when it perceives that the reading from the oil pressure sensor is higher or lower than predicted.The P0521 code is defined as there being a fault with the engine oil pressure sensor/switch range/performance. What the P0521 code means Every modern vehicle is outfitted with a PCM (Powertrain Control Module). Do this after transmission repairs: https://www.youtube.com/watch?v=1euQyVEhqiw&feature=youtu.beDuring transmission installation, one of the final stages is ...V6 2.5 Coolant Type? 111. 5. Unusual Occurrence. 262. 4. 2006 chevy silverado stuck in 4L ... malibu, means, message, monte, reset, service, vehicle · Subscribe.... Malibu , it is crucial that you pull over and shut the engine off as soon as possible. Other trouble codes related to this are P0520 , P0521 , P0523 , and P0524 ...Overview Of P0521 Chevy Silverado 2011. OBD-II fault code P0521 indicates a defective oil pressure sensor or gauge. The Powertrain Control Module (PCM) manages the vehicle’s sensors, including the oil pressure sensor. Oil pressure sensors in vehicles are typically three-wire sensors with 5 volts, a signal return ground, and a signal voltage ...That’s exactly what we’re going to cover on this page. First things first, P0520 is a generic OBD2 code. That means it applies to all brands and models of vehicles that were manufactured after 1996. While it appears more often on GMC, Dodge, Chevrolet, Mercedes and Cadillac, pretty much any car can throw you this code. P0520 Code DefinitionDo you have a 2007-2011 Chevrolet Express, Silverado, GMC Sierra or Savana with the 6.0L engine and are experiencing an illuminated check engine light and st...The P0521 code is for the power steering pressure sensor circuit high input. This code is usually triggered by a problem with the power steering pressure sensor, the power steering pump, or the power steering hoses. It is a diagnostic trouble code (DTC) that is set when the power steering pressure sensor input voltage is more than expected.P0521 - Engine Oil Pressure Sensor P0522 - Engine Oil Pressure Sensor Low Voltage P0523 - Engine Oil Pressure Sensor Switch High Output When I unplug the sensor and start the engine the gauge is at 0, so I think that points to a bad sensor and not a bad stepper motor. I've searched old posts and the code descriptions.Labor: 1.0. To diagnose the P0521 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.JOHN aka Eauto. self employed. High School or GED. 25,484 satisfied customers. 2013 chevy malibu 2.5 reduced power mode engine code p06de.December 12, 2019 by Jason. P0521 is an OBD2 diagnostic code that is triggered when your Chevy Tahoe detects that the value being sent from the oil pressure sensor is out of its normal operating range. It is typically caused by a bad oil pressure sensor or an issue with the oil system, and should be diagnosed and fixed right away.The Diagnostic Trouble Code (DTC) P2272 indicates “Oxygen Sensor Signal Biased/Stuck Lean (Bank 2 Sensor 2).” Code P2272 is registered when the PCM detects low voltage from the oxygen sensor, which indicates that …P0522 is the universal OBD-II code for Engine Oil Pressure Sensor/Switch Low Voltage. Related codes include P0520, P0521, P0523, and P0524. What the P0522 code means. The oil pressure sensor sends a message to the PCM (Powertrain Control Module), which gets transmitted in the form of a voltage reading.For More Info visit us at: http://1aau.to/h/H5/In this video 1A Auto shows you how to bleed or purge the air from the system by yourself00:00 How to Bleed Br...Engine oil pressure sensor. I have the P0521 code that has been showing up on and off for a bit now. Unfortunately there is VERY little information for the 1.6 diesel that I can find on the internet, including the location of the oil pressure sensor/sending unit. The other problem I have had is verifying the ACDelco P/N for the sensor, I have ...May 30, 2020 · Be aware that there a big problem with GM 2014-2018 oil pump.It will fail sooner or later and its a big job 10 to 12 hours...Tons of people had to replace it... Overview of ho to fix a P0521 Code on a Silverado, Sierra, Tahoe. Chevy engine type, including the 4.3L, 5.3L, and 6.2L.Oil Pressure Switch Socket: https://a...The cost to diagnose the P069E Chevrolet code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 …The P0521 code is for the power steering pressure sensor circuit high input. This code is usually triggered by a problem with the power steering pressure sensor, the power steering pump, or the power steering hoses. It is a diagnostic trouble code (DTC) that is set when the power steering pressure sensor input voltage is more than expected.This specific P0521 engine code is triggered when the PCM sees an unexpected value in the engine oil pressure sender/sensor. It could be out of it's normal range or could be fixed when it should fluctuate. For this P0521 trouble code, the cause may be mechanical or electrical, but is more than likely electrical related.FIX CODE P0036 P0054 P0137 P0138 P0141 ENGINE LIGHT CHEVY, CHEVROLET, GMC, BUICK, CADILLAC Car Scanner: https://amzn.to/2G5lxTi Oxygen Sensor Socket: https...October 19, 2023 by Jason. P0455 in the Chevy Silverado is a trouble code that indicates your truck has a LARGE evaporative emissions leak. This code indicates that there is a large leak in the evaporative emission control system and can cause issues such as decreased fuel efficiency, rough idling, and increased emissions.May 26, 2022 · This Diagnostic Trouble Code (DTC) is a generic OBD-II transmission code. It is considered universal as it applies to all makes and models of cars (1996 and newer), although the specific repair steps may differ depending on the model. In our experience, engine code P0521 is more common on Chevrolet, Dodge, GMC, Mercedes Benz, Pontiac, and ... The cost to diagnose the P069E Chevrolet code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 …FIX CODE P0036 P0054 P0137 P0138 P0141 ENGINE LIGHT CHEVY, CHEVROLET, GMC, BUICK, CADILLAC Car Scanner: https://amzn.to/2G5lxTi Oxygen Sensor Socket: https...Sep 5, 2022 · Overview of ho to fix a P0521 Code on a Silverado, Sierra, Tahoe. Chevy engine type, including the 4.3L, 5.3L, and 6.2L.Oil Pressure Switch Socket: https://a... Brian Onyango. Updated on August 15, 2022. When the check engine light comes on in your Chevy Silverado, it may be because of the P0521 code. In today’s post, we explain what that means, the common causes of this error code, and how to fix it. The P0521 code is for the power steering pressure sensor circuit high input.P06DD code - The engine oil pump features seven vanes and a moving element that continuously adjust to maintain a regulated oil pressure supply by varying the displacement of the pump. The pump has two regulated pressure stages of operation controlled by an on/off solenoid. Low pressure mode regulation (solenoid on) is …P0521 Chevy Silverado Trouble Code – Symptoms, Causes #Symptoms. The P0521 Chevrolet Silverado check engine light code is caused by a problem with the PCM. This system is located inside every modern vehicle. The PCM controls many different electronic components, sensors, and controls. One of these is the oil pressure sensor.Nella nostra esperienza il codice motore P0521 appare più spesso su Chevrolet, Dodge, GMC, Mercedes Benz, Pontiac e Cadillac, ma si applica a qualsiasi marca/modello. Che cosa significa il codice di errore P0521? Il computer principale del veicolo chiamato Powertrain Control Module (PCM) controlla molti sensori, controlli ed …What is the Cost to Diagnose the Code C0561 Chevrolet? Labor: 1.0. The cost to diagnose the C0561 Chevrolet code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.radarman2000. 182 posts · Joined 2015. #2 · Jun 17, 2016. Potential causes of a P0521 code include: Low oil level in the engine. Old dirty oil (overdue for an oil change) Faulty wiring or connection/connector in the oil pressure sender circuit. Faulty oil pressure sender/sensor. Reply.
Code P0521 is a generic OBDII fault code that indicates an oil pressure issue or problems with your oil pressure sensor. But is it a severe code? And what causes it? This article will examine p-code P0521 in detail, including its meaning, symptoms, and fixes. We'll also take a look at some other related queries and their answers .. Fccla creed
ACDelco 12673134 GM Original Equipment Engine Oil Pressure Sensor https://amzn.to/2znxiC9Lisle 13250 Oil Pressure Switch Socket https://amzn.to/2QWWiXMDorman...2013 Malibu LT 2.5 with error code P0521 (engine oil pressure sensor range/performance.) bell sounds with Stop Engine Immediately, low oil pressure. So three weeks before this I thought I had gotten bad gas and ran a tank and a half of really good gas through it and the day before yesterday I...What Does the P06DD Code Mean? Diagnostic trouble code (DTC) P06DD stands for “Engine Oil Pressure Control Stuck Off.” On a GM or Dodge system, this would mean the pressure would always be at the higher (65psi) setting and would never drop to the lower (30 psi) setting even when commanded to do so.P0521 Symptoms: Chevy Malibu These are some of the symptoms that P0521 is most commonly associated with: Glow-low Oil Light/Gauge Although P0521 can often be caused by an oil pressure sensor problem, it is important to treat readings from your oil gauge or low oil warning as if they were correct.Labor: 1.0. To diagnose the P0523 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.2007-2010 Chevrolet Avalanche, Silverado, Suburban, Tahoe; 2007-2009 Chevrolet Impala; 2005-2009 Chevrolet Trailblazer; 2007 Chevrolet Monte Carlo; 2007-2010 GMC Sierra, Yukon; ... P0521 Code: Engine Oil Pressure Sensor/Switch Range/Performance. P0520 Code: Engine Oil Pressure Sensor/Switch “A” Circuit.As stated elsewhere, code P0455 can also indicate a condition in which no fuel vapors flow through the system. In these cases on Chevrolet applications, the most common cause is a defective EVAP purge valve/solenoid that is stuck in the closed position, thus preventing engine vacuum from evacuating the EVAP system.P0521 is an OBD2 diagnostic code that is triggered when your Chevy Traverse detects that the value being sent from the oil pressure sensor is out of its normal operating range.. It is typically caused by a bad oil pressure sensor or an issue with the oil system, and should be diagnosed and fixed right away. While it is possible (and even …The engine oil pressure control circuit on a PDE Chevy Malibu can be stuck off, preventing the engine from getting the correct amount of oil pressure.This can result in decreased fuel economy, overheating and possible engine failure. If you experience any of these symptoms, please contact a mechanic as soon as possible to help restore your …What Does the P0521 Chevrolet Code Mean? The engine oil pressure sensor changes voltage based on the engine oil pressure. The engine oil pressure sensor is a 3-wire sensor comprising the signal circuit, the low reference circuit, and the 5 V reference circuit.P06DE code indicates the engine oil pressure control circuit is stuck on or off. This code means the powertrain control module ( PCM) has detected that the oil pressure has fallen below the minimum required pressure. To counter this, PCM disables the oil pump solenoid for around 250 seconds and prevents it from sending oil to the engine.Jan 22, 2021 · It was an intermittent p0521 - would come on and stay on a 100-400 miles and then clear itself. Oil was normally a little below full when it triggered, but never to the add 1 qt level and typically at 2 dots on the dipstick. 3 of the 4 times p0521 came on was when the engine was under heavy load - pulling a trailer or climbing a very steep grade. .