Golf IV / Jetta IV :: Cylinder 2 And 3 Misfire - Code P0411
Jun 25, 2015
Alright so my car is popping up 4 codes.
P0411 - Secondary Air Injection System Incorrect Flow Detected
P0300 - Random/Multiple Cylinder Misfire Detected
P0302 - Cylinder 2 Misfire Detected
P0303 - Cylinder 3 Misfire Detected
Vehicle: 1999.5 VW Jetta MK4 2.0L GLS (AEG)
The P0411 code I have had for a while now and I been lacking to fix it. I pretty sure I can get this fixed but it doesn't cause problems so I haven't paid to much attention to it. Anyways, the other day I noticed a puddle of coolant under my car so after checking it out, the water pump was leaking so I bought a new one and replaced the old one. However, during the replacement process I had to remove the timing belt and I accidentally turned the top pulley about 1 notch and didn't notice at the time. After putting everything back on, I turned my car on and the engine sound a bit weak so I ran for about 10 minutes around a couple blocks.
I instantly noticed that the car had no power and it took me a long time to speed up. When I got back, I plugged in my scanner and I only had the same P0411 code and nothing else. After carefully reviewing the camera I had recording during the water pump replacement, I notice I had turned the top pulley a bit so I went ahead and removed the timing belt, readjusted it, and it worked! I was excited that the car was working fine again. Soon after, I headed out to take a drive and noticed after 60MPH the car didn't have much power. The car still accelerates after 60MPH, but extremely slow. As soon as I arrived back home, I plugged in my scanner and that is where I seen the 4 codes. Now my question is what could have caused this? Could I have damaged something when I ran my car with the incorrect timing?
Things I have done so far:
-I checked to see if I left anything unplugged.
-I checked for any vacuum leaks
-I checked my oxygen sensors so see if I was running rich/lean
Things I will do after work today:
-Check the spark plugs
-Check spark plug cable for damage
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I own a BMW not a VW! My 19yr old daughter purchased her first car a few months ago, an '03 Jetta 2.0L with approx. 170,xxx miles. Just after she got it we pulled a P0420 code, but it ran fine so we haven't worried too much about it. I've cleared that code and after about 2 weeks it will come back. Last week it started to have some issues with rough idle, stumbling/hesitation. I pulled the codes yesterday an in addition to the catalytic code is a cylinder #3 misfire P0303. I thinking the 2 codes are not related. I'm assuming the typical things to look for on the misfire are coil, wire, plug? Looks like the coil on this engine is a combined unit so no switching coil packs to see if the miss follows a bad coil pack.
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2000 Jetta 2.0 cylinder 2 misfire. Replaced plugs and wires. No check engine light but code is pending and there's still a misfire. Need to smog
Replace coil pack?
Swap fuel injectors and recheck?
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When i got my 2000 jetta vr6 it has a CEL for misfires. Searched this board and google already. Im thinking injectors (havent checked yet) I noticed something weird the other day. At a light i get the CEL flashing. Then after a bit it will come on and stay on. I plugged in my generic reader and deleted the codes. When the CEL is on I get loss of power and hesitation. When its deleted the car runs better. I get my power back. I looked in the coolant tank and see no bubbles. Could this be the ECM? Im still going to get injectors but want to buy the gasket and anything else I am going to need to put it back together. I already cleaned the MAF, replaced some vac lines, coil pack, wires and checked plugs (gapped at .28) ...
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I have a 2005 Jetta 1.8t and the thing will not start! The battery is fine, and has been recharged 100%. The fuel pump is pumping. It cranks all day, but just won't start. The only error code i'm getting is a P0411 which I understand is a leak in the vacuum system somewhere.
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Just installed a short Ram intake on my 2000 Vw Jetta 1.8t. Had the Intake for about 250 miles and now the check engine light came on. Just pulled the code p0411 secondary air injection system incorrect flow detected. Is this just cause there is more air going through the MAF sensor?
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Whenever P0411 triggers for me, it is very late into driving (i.e. like 30 minutes into the freeway type of situation) where the engine has already hit optimal temperature. I've gone 1000 miles after reset before it triggers. Sometimes 200 or so miles, but it never triggers quickly after a reset. I'm unsure if it matters, but the VR6 does have a cold air intake (and I do have the breather hose connected & maf correctly connected). I'm pointing it out because p0411 became an issue about 500 miles after I had installed the cold air intake.
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I got 2001 vw jetta 2.0.. I keep getting check engine light,,when i scan it keep saying P0411 Secondary Air Injection System Incorrect Flow Detected. i replaced new smog air pump, and new egr valve and today i was driving car and i got check engine light, its still same code.
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2004 VR6 24v ... I had another thread about my son's car stalling after driving about 20 miles and then running good again after letting it sit for a couple of hours. Anyway I changed the Crank Position Sensor and I have been driving it work and back the last couple of days so I am starting to relax that the CPS fixed that problem. Won't be positively sure for a while as the problem took a while to occur. So far so good.
While coming to work today the car picked up the P0411 code, secondary air injection system incorrect flow. When I changed the CPS sensor i unbolted a module underneath the car by the oil filter to get better access to the CPS. I did not remove it, just unbolted it so I could push it out of the way about and inch.
After putting it all back together and driving it for several trips with no stalling this P0411 comes on. Is that module I moved the Secondary Air Pump and could I have disturbed something. I will check it when I get home. How critical is that code. I read where it works to warm a cold engine. What effect would there be driving with that code?
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So i got a 98 passat sedan used and was told it read a p0411 code. The person at autozone told him it was a cam sensor. The sensor was replaced. I know now from the manual that codes reads for sec. Air injection system , incorrect flow. It could be the vacuum lines. Now lets say it is the vacuum lines. Their is a misfire on cylinders 1-3.
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Getting misfires on cylinder 1 and 5 in my 2001 Jetta GLX. Replaced coil pack. Installed a different/used cam position sensor.
Swapped injector 1 and 5 with 2 and 6. Cleaned MAF and throttle body and did adaptation. Checked resistance of plug wires and swapped plug positions.
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Alright Ive had a misfire on cylinder 1 for far too long. I've replaced all ignition coils and plugs with oem parts. Also replaced fuel pump and filter with oem. As well as 2 injectors. Before I would misfire under load, now I misfire at idle..wiring looks good and not cracked from what I can see. Only codes I reciece are random multiple misfire, misfire cylinder 1. And diverter valve mis function because of my BOV. So what do I do now vortex?
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New to the VW world but I am not out of my element for I am a Porsche guy. So I feel right at home. Last night I picked up a 2001 wolfy Jetta with a 1.8t on the cheap with a misfire on cylinder 4.
I have verified I have no spark on 4. I have confirmed the issue is not the spark plug, coil pack by swap and see method. My coil pack and plug work fine on another cylinder. I reset my cels and here are the new ones that pop up:
a 121 - gas pedal position sensor- doubt this would give me a no spark
a 304- Misfire on 4, (duh, like I needed to hear that)
a 030- bank one 02 -Doubt this would also give me a no spark condition)
In my testing:
I have good system voltage on the coil pack
I have good ground ohms
My signal wire is not shorted high or low
When I take V and ohm readings on the coil pack connection, either with the ign on or off they are all in line with the other sensors. So I don't think I have a wire issue.
The PO had the ECU replaced at a local dealer. I looked at the old ECU and it appears it had got wet at one point.
Im wondering if the same thing hasn't happened to the new one. however after they replaced the ECU they gave him the car back still broken. So it never ran even with the new ECU.
1 Where is the ECU?
2 What tells the ECU to fire the coil packs at the right time?
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So I've been having some problems with my 2003 Volkswagen Golf lately (2.0 L gasoline engine, 98k miles). It started with an engine coolant thermostat code. This was repaired by replacing the thermostat and housing. Shortly after this fix I began to get a misfire, especially on rainy and humid days. Checking other forums I discovered that this was probably the result of a bad ignition coil.
The coil, spark plug wires and plugs were all replaced, but I am still getting a misfire. The idle is very rough so I've heard that it could be a bad fuel injector or faulty ground (though with the new components the other three cylinders sound cherry). The next step would be to purchase a "noid" test light and determine if the electronics to the injector are bad. I've also read that it could be a vacuum problem. There is a smell of unburned fuel when the engine is running.
How was it repaired? I'm quite good with the mechanical parts but lack the diagnostic tools, vacuum testers, multimeter and other such devices for performing complete screenings of the vehicle. Also, I can't drive it out to the local auto parts store to read the new error codes anymore. Finally I've got a "Chilton's" for the car but if there is a better manual available (better pictures, more descriptive instructions).
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PO302 CODE . Lets hope that it's only cylinder 2 coil or spark plug !
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I am a new vr6 owner. I just purchased mine not to long ago. It seems to have developed a pretty mean misfire on Cylinder #4. It is also showing a low compression level of 90 on cylinder #4. all my other cylinders show somewhere between 105-110. I replaced my wires and my coilpack. It did not improve anything, infact, my car seems to run worse now. I am baffled as to what can be causing my misfire.
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Replaced my water pump March 2nd using the "From Below" method. Started the car after and the check engine light was on and water pump was no longer leaking. I drove the GTI to Advance (15 Mins away) it drove fine and I pulled two codes.
P0300 - Random Multiple/Cylinder Misfire
P0301 - Cylinder 1 Misfire
The car pulled and drove normally. The next day the car is misfiring badly. Hesitation and bucks when accelerating until roughly 3k then smooths out.
I will swap my coilpacks and check if the misfire moves as soon as I can get my hands on an OBD2 Scan Tool.
From what I understand about the VR6 :
-The water pump runs off the serpentine belt
-Camshaft timing is controlled by the timing chain.
-Timing chain is not affected by the serpentine belt/pulleys.
Questions :
-Can turning the Crankshaft Pulley affect timing?
-Can that be the cause of the misfire?
24V VR6
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