Check engine light problems
Check engine light: It indicates that there is a failure in the way the engine works, specifically in the exhaust system. When it blinks, the failure is serious.
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What does the check engine light of your Passat mean?
Related problems:
See owner's manual
Top problems
Engine managing light 
Solved
2007 Volkswagen Passat 2 lt petrol 150 miles
Light stays on but does not seam to affect cars performance
3 reports
1
Best answer (according to eric)
AN
Hi Eric your engine management system will illuminate your light under many conditions the main 1 I would say with your car will be an oxygen sensor an exhaust leak or your catalyst efficiency. Due to the technology incorporated into your vehicles ecu your vehicle will alter its fuel it’s air ect automatically to compensate for the fault. So you wouldn’t notice performance issues. If it’s a bad 02 sensor your car could be over fuelling and running rich this in tern can melt your catalyst and cause illumination of your Eml. And you wouldn’t notice a problem till your car dils emissions for over fuel or on emissions. My advice would be have the car diagnosed if it gives codes relating to oxygen sensor or cat efficiency you have just found your problem and I’d recommend you have it fixed at the earliest opportunity. I hope this information helps. Vw can also have issues with wiring harness and ignition coils but there usually more noticeable as your car would have a slight misfire. Regards andy
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CommentEngine light
2013 Volkswagen Passat Sedan 51000 miles
Constant engine light that was erased but shows again
1
1 report
engine light
2007 Volkswagen Passat wagon 270000 miles
sent it to a mechanic because wouldn’t start they fixed it but now my engine light is on
EPC, Battery, engine lights all on and won't turn over
2013 Volkswagen Passat Passat 126923 miles
So I have a 2011 VW Passat, it was working fine yesterday and when I got in the car today it wouldn't start. The battery indicator light is lighting up in red, and the EPC and check engine light we're all popping up in yellow. When I start it, it's getting power but it's turning on and off on and off on and off. It's like trying to get power to all the other parts of the car and failing to do so. What's wrong with my car? I checked the oil and the oil is fine I tried to jump it and that wasn't the problem either. What do I do?
15 reports
The installation of the new battery on the computer must be done at the repair shop
Wait… “new battery”? he only stated that he’d tried to “jump it & that wasn’t the problem either”. No “new battery”, nor anything else -new- was added/changed if taking his inquiry @ face value. Just fyi & i’m letting u know in hopes some1 SOMEwhere CAN answer this cuz i had similar issue w/my old Passat i USED to own.
@T.L.I change my battery and mummy radio won’t start. It’s stays on a loop. And all these lights are on…
A friend told me the same thing about the new battery, have to take it to a repair shop so they can set the computer and battery together
A friend told me the same thing about the new battery, have to take it to a repair shop so they can set the computer and battery together
CommentSuddenly a light come out and my car out of power
2007 Volkswagen Passat 2.0 tdi 113000 miles
This yellow light come suddenly when i am on long routes and my speed becomes down while i am driving. When i stop my car on hard shoulder and turn off my engine after 5 minutes i again start the engine and light is gone
1
5 replies
Скорее всего это проблема со свечами накала, надо бы их проверить а желательно поменять)
Das hatte ich auch. Muss was in der Batterie ausgewechselt werden
CommentVW Passat 2015
2015 Volkswagen Passat sedan 200000 miles
I am getting the EPC as well as the Engine icons on my dashboard. The mecanic told me the turbo has to be replaced... The car looses power especially when I turn on the AC,I would like to know your opinion. Thank you
4 reports
brusko5645 from Mexico 4 months ago
Tengo el mismo problema alprincipio pense que solo era cunado prendia el aire acondicionado, pero despues es cuando piso el pedal a fondo para rebases!!
CommentSecondary Air Injection System Insufficient Flow Bank 1
2022 Volkswagen Passat Sedan 151000 miles
Car is showing check engine light
Fault code P0491
Fault code P0491
Dashboard lights
2012 Volkswagen Passat 118060 miles
Issue with dash lights. Engine light, tire pressure light and a flashlight
Looking light
Looking light
The engine is not working.
2014 Volkswagen Passat engine 200000 miles
The engine light appears on the dashboard.
Noise when accelerating
2015 Volkswagen Passat Hatchback automatic 117130 miles
Hello... I have small concern about my vehicle, it is 2015 VW Passat 1.8L 4 door TSI model... I hear a noise ( hising ) every time when accelerating and when it comes between 1500 -2000 RPM ( don’t know is this amount ok )...Vehicle does not lose any power, one other related sound coming from engine or vehicle... No check engine light or even no any codes from OBD reader...
Thank you for your help
Thank you for your help
2 reports
Coolant system malfunction
2002 Volkswagen Passat GLS, station wagon, manual 5 speed 170000 miles
Had the check engine light come on a few times, the code is something to do with the coolant system. The temperature gauge doesn't like to register. Replaced the temp sensor, flushed the system, and checked for air pockets... nothing. The fuse was a little loose for the gauges, replaced it. Any ideas? Unsure if directly related, but the radiator housing unit is dual fan. I've been told that only one fan (as it is) would be spinning until i turn on the AC. Should both be spinning regardless, or is that not normal and potentially connected to the issue at hand?
1 report
3 reports
2 reports
Electrical
2007 Volkswagen Passat Salon 100000 miles
Part of my fuses in the engine compartment are not working and as I crank my car the check engine light doest go on.
Engine light
2013 Volkswagen Passat Passat TDI 97400 miles
So I don’t know if I’m starting my car on too quickly or I have something wrong with my engine but every now and again my check engine light with pop up for a few days and then go away. Lately in the past year it’s come on more recently. Thoughts?
6 reports
Car won't reave up
2013 Volkswagen Passat Desiel 155000 miles
Removed fuses in engine compartment to for blow heater fuse now engine management light on and glow heater light the car would reave up?
2 reports
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