How To Fix P1101 Code Chevy Cruze
One of the most common diagnostic trouble codes (DTC) Chevrolet Cruze users get is the P1101. The problem code is expected because of the unreliable nature of the PCV (Positive Crankcase Ventilation) system that Chevrolet uses for well-nigh of its vehicles. This code and a few more will still reoccur even after replacing the whole PCV system.
In that location is a lot of misinformation on how this organization works. Therefore, I'm going to go through a basic simply clear overview of how the organization works. Below is an outline of how the gas flows in a Gen 1 Chevy Cruze 1.4L Turbo PCV system.
The PCV system was created to assist with the engine's ventilation to have better efficiency and fuel economic system from the engine. When the motor runs, some of the exhaust gas comes through the piston rings since in that location is no perfect seal, but most of it goes out through the auto'south tailpipe.
The gas that comes through the piston band enters the crankcase. This creates a positive pressure which has to be evacuated. The crankcase hosts an oil separator in the valve cover. The oil separator absorbs the oil vapor from the gas and redirects information technology back to the engine. The residue of the gas is directed through a chamber in the valve encompass into the cylinder head and and so enters the intake manifold, every bit shown.
In that location is one cheque valve at the entry of the intake manifold. This bank check valve is opened under vacuum with a PCV pressure level control diaphragm to allow the gas in. The PCV pressure level control diaphragm regulates the amount of vacuum produced by the intake manifold when the engine is nether vacuum conditions on the crankcase (the ideal vacuum is 11-18 inches of water.)
The PCV force per unit area command diaphragm is shown below. A lot of people refer to it as the PCV valve or the PCV vacuum regulator diaphragm.
The PCV pressure command diaphragm is prone to failure. In well-nigh cases, this is the part you will have to fix to get rid of the P1101 code and similar ones depending on the trouble'due south length and severity.
Once the gas passes the first check valve, it flows through a corrugated hose that leads information technology into the second check valve at the turbo inlet, exiting it into the turbo inlet.
The P1101 lawmaking is mostly attributed to your PCV system's status, cleanliness, connections and wiring, the shape of the diaphragm, and sometimes the throttle body's cleanliness. Various auto parts will eventually develop carbon build-up and firm deposits over a long menses of apply. This clay may sometimes lead to the occurrence of the P1101 lawmaking.
The P1101 Definition
Definition: Intake Air Flow System Performance
In some other vehicles, the P1101 code is stored when the PCM detects a problem with the Mass Air Flow Sensor Organisation (MAF). The PCM normally detects the problem when it runs its self-diagnostic exam chosen the Key-On Engine Running (KOER) test. The problem is registered if the MAF voltage is lower or greater than the one set by the manufacturer.
What The P1101 Chevy Cruze Trouble Code ways
The P1101 Chevy Cruze code is stored when the PCM detects a trouble with the Intake Air Menstruum System'due south functioning. The problem is registered if the Intake Air Flow Organisation'southward performance is lower or greater than the one prepare by the manufacturer.
When you see this code, the event lies within the realm of the Intake Air Menses System. This includes the PCV system, intake manifold, bank check valves, connectors, wiring, and any chemical element associated with airflow forth its vicinity.
Other codes that may be related to the P1101 lawmaking in Chevrolet Cruze vehicles (depending on the length and severity of the problem) are:
1. P0171 – Fuel Trim System Lean
2. P0106 – Manifold Absolute Pressure (MAP) Sensor Performance
3. P0507 – Idle Air Control – RPM higher than expected
Some Of The Symptoms Associated With The P1101 Lawmaking Are:
1. Rough idling
Due to the increased idle speed (measured in RPM – Revolutions Per Infinitesimal) of the engine. Idle speed is the rotational speed an engine runs when information technology is idling (the vehicle isn't moving, but the engine is still running.) This number will vary depending on the car. In Chevy Cruze vehicles, the number ranges from 600-800 rpm depending on the engine cylinders and transmission mode.
2. Reduction in fuel economy – this volition exist apparent with an increase in the liters per 100km you use. The lower the number of liters stated, the better the fuel economy.
3. Engine running roughly – you volition probably observe this when you beginning experiencing some shaking and bouncing sensation in the car, followed past odd sounds and irregular RPM.
iv. Fume from the tailpipe – smoke out of the tailpipe is associated with several causes such as oil leakage and condensation. The smoke may announced white or blue.
5. Hissing racket in the engine bay – this will imply that at that place may be a leak in the engine bay (punctured hose/broken connections) or a ruptured PCV pressure level control diaphragm.
Causes Of The P1101 Trouble Code In Chevy Cruze Vehicles:
1. Cleaved or blocked PCV system hose – The blocked hose may cause the oil to exist pushed upwards into the combustion chamber, causing the oil to burn down within the engine and out the exhaust pipage.
ii. Cheque valves may be blocked/chock-full. Pressure change in the PCV system or clay accumulation in the check valves will foreclose efficient gas menses. The result will be a low fuel economy due to the gas and oil mixture difference.
3. Air leakage before and after the Intake Air Flow System. This may exist leakage forth the corrugated hose connecting the turbo and the intake manifold.
four. The PCV pressure control diaphragm may have busted/ruptured. A faulty PCV pressure level control diaphragm will affect the force per unit area difference in the PCV system resulting in a hissing sound.
5. Air filters may be blocked. Dirty air filters may prevent sensors from getting correct readings, therefore, resulting in reading errors.
How Serious Is The P1101 Lawmaking On Chevy Cruze?
The P1101 code is mostly not an indicator of a significant problem in your Chevy Cruze. Still, it would cause internal bug in your engine if left unchecked for a prolonged period. As well, depending on the severity of the problem, it will result in rough driving, terrible fuel consumption, and power loss.
Moreover, the repair cost for the trouble is relatively inexpensive at around $fifty -$60 (applies when yous are replacing the PCV regulator system past yourself – which is about of the time).
Equally a rule of thumb, always brand sure you take every alert sign seriously, especially when you lot don't know the problem. Early diagnosis and fixes will save you a lot of money downwardly the road and maybe your life too.
Also, make sure to always do regular maintenance on your Chevrolet Cruze. Just because the check engine light isn't on, information technology doesn't mean that your machine is running optimally.
How To Diagnose And Set up The P1101 Code Quickly On Any Chevy Cruze
Earlier you popular the hood and take a wait inside, you volition need an OBD-II scanner.
These are the step-by-step procedures you should follow:
1. Use the OBD-II scanner to detect all the trouble codes stored in the car system.
2. Remove the PCV system cosmetic comprehend. Start the engine and allow it run while the car is idle. Place a finger on the opening of the PCV pressure command diaphragm if you notice a hissing sound from it. If the hissing sound stops, you may have found your trouble. If that is the instance, all you have to do is supervene upon the unabridged PCV cover since the diaphragm is fixed to information technology. However, information technology is appropriate to keep diagnosing more problems to encounter if there is a more significant underlying issue, i.due east., faulty PCV check valves.
3. Turn the engine off and locate the corrugated hose connected to the PCV check valve on the intake manifold. The hose is brittle; it may break if not advisedly handled. Disconnect the hose from the base. Use a torch to look inside the pathway from which the hose has been disconnected.
four. You may observe an orange or pink like a nipple at the back of the pathway. That is the check valve. If it is non visible, use cotton swabs and rubbing booze to clean the region. Check again. If the check valve is non visible, this may be the trouble that yous were looking for. A replacement function (for the entire intake manifold from a certified seller) and further analysis from a certified mechanic may exist required.
5. The side by side step is to check the PCV hose continued to the ii check valves. Without disconnecting the other side, blow air into the hose; information technology should blow freely. The next step is to suck air back from the hose, later which it should cake the airflow. It will need to be replaced if it doesn't do any of the above. A hissing sound volition be present if the hose is leaking while the engine is running.
6. Fix the leaks, if any, and re-run the scanner test to see whether the lawmaking is still there. If you lot followed all of these procedures, your problem should be fixed.
seven. If the replacement unit doesn't fix the trouble, y'all will have to exam the PCM to determine if information technology is terrible. A lousy PCM volition take to be replaced, only this would require a qualified professional'south extensive piece of work.
Tips To Assistance You lot Avoid Getting The P1101 Code In The Future
1. Regular cleaning and maintenance. Most car troubles tin can be fixed by a regular cleaning habit and a short, frequent visit to the mechanic.
2. Bank check for vacuum leaks regularly.
Read more: P1345 Chevy: Crankshaft position- camshaft position correlation
Frequently Asked Questions
How to replace the intake manifold?
The procedure is simple and straight forrard. Please read this article to learn how to do it.
Can I set up the P1101 trouble code by cleaning the PCV?
Sometimes, yeah. Carbon build-upward and depositions tend to clog pathways and restrict airflow. A regular cleaning schedule and maintenance cheque may help set up the problem. However, you should make sure to cheque for any underlying issues even if the problem disappears.
How long tin can I drive my Chevy Cruze with the P1101 code?
From a statistic standpoint, you would have to reach 50000 – 70000 miles earlier replacing any of these parts. Withal, this will depend on the car model, year of make, and usage.
Is fixing the problem worth it? Should I get a better car instead?
You may be tempted to get rid of your vehicle mainly because the problem is likely to occur time and time again. However, the cost of repairing the machine is more economical than what you volition get past selling it. The disquisitional parts of the vehicle are quite reliable, hence, worth the proceed.
Should I buy whatsoever generic replacement parts?
No. Every bit mentioned before, fifty-fifty the well-nigh certified replacement parts volition somewhen neglect. It is advisable to get the near reliable one of them all for a longer life bridge, in which case you volition need the ones from General Motors themselves.
Read More: Bad MAP Sensor Symptoms and How To Troubleshoot
Source: https://www.obdadvisor.com/codes/p1101/
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