Engine backfires and Warning Lights 19 SI

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SirVicksDeep

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GDI engines can give some black gunk on the exhaust. Check your spark plugs and also PCV as the oil shouldn't be consumed in engine with that low mileage unless you filled it with less than required oil
I was able to get it to a dealership without turning it off. This was the scan sheet. They said it was over revved at some point in time to create the P0219 code. They cleared it and said not to drive it hard if I'm not in Sport Mode. Does this make sense? The first time it happened my roommate had my car and most likely was driving it hard without the Sport Mode on.

Honda Civic 10th gen Engine backfires and Warning Lights 19 SI Screenshot_20190926-141937_Gallery


Honda Civic 10th gen Engine backfires and Warning Lights 19 SI Screenshot_20190926-141937_Gallery
 

saiko21

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I was able to get it to a dealership without turning it off. This was the scan sheet. They said it was over revved at some point in time to create the P0219 code. They cleared it and said not to drive it hard if I'm not in Sport Mode. Does this make sense? The first time it happened my roommate had my car and most likely was driving it hard without the Sport Mode on.
Causes for this P0219 transmission code may include: Driver error from deliberate or accidental over revving of the engine Defective CKP or CMP sensor Bad transmission input or output speed sensor Open or shorted circuit in the CKP, CMP, or transmission input/output speed sensor system Faulty PCM or a PCM programming error

Read more at: https://www.obd-codes.com/p0219
Copyright OBD-Codes.com
 

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Also, you have U 0131 which is lost communication code. Our cars should auto cutoff fuel if the engine is going to over revving condition. I am pretty sure that you have some bad sensors and I don't know if Honda covers it under warranty as they might say you abused the engine which caused it
 
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COOL COUPE

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You can't over rev while moving up the gears " in order" ... You would simply hit the rev limiter and the engine would cough. I would say either a bad engine break attempt or maybe a reach for 5th gear and 3rd was realized.
 


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Backfire is a result of running a rich air fuel ratio, try looking for any disconnected o2 sensor or maf sensor.
I think you mean "afterfire" meaning unburnt fuel ignites through the exhaust, which is a great way to ruin catalytic converters. "Backfire" is quite different and arguably much worse, it means ignition of fuel occurred through the intake. The only time this is technically acceptable is with a miller-cycle engine, and in that case it's not a problem since that's the way those run.

The more you know.....
 

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You can't over rev while moving up the gears " in order" ... You would simply hit the rev limiter and the engine would cough. I would say either a bad engine break attempt or maybe a reach for 5th gear and 3rd was realized.
DING DING DING - I'd bet it was a "money shift". Consider having a compression test performed on the engine at a minimum. As a maximum, either pull the head or inspect with a borescope.... or sell the car before the engine fails.
 

MattyNice

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Definitely sounds like your friend took a fast and furious ride to the store and grabbed the wrong gear. It’s either that or you yourself did the over rev at some point in time. If not, some friend to be driving your car like that.
 

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It's starting to look like your friend money-shifted your car! This is why I don't let anyone drive my car but me.
Yep. Nobody drives my car for this exact reason. Also the same reason I have a rule of never buying another person's turbo'd car.
 


kshawn

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I vote money shift as well. Especially since you're going through oil.
 

Florence_NC

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Backfire is a result of running a rich air fuel ratio, try looking for any disconnected o2 sensor or maf sensor.
That is one of about a thousand reasons there could be a backfire.

The internet is full of people giving out expert advice when they are not experts, not even close. Please don't add to the problem.
 

NoelPR

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Your car was drove like it was stolen.
Case closed.


BTW RIP 1.5T
 

Florence_NC

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Causes for this P0219 transmission code may include: Driver error from deliberate or accidental over revving of the engine Defective CKP or CMP sensor Bad transmission input or output speed sensor Open or shorted circuit in the CKP, CMP, or transmission input/output speed sensor system Faulty PCM or a PCM programming error

Read more at: https://www.obd-codes.com/p0219
Copyright OBD-Codes.com
I was going to say basically the exact thing:

A code for over-rev does not necessarily mean an over-rev occurred. It means that the ECU received a set of data that make it think the engine over-revved. I have seen plenty of instances (not with OEM Honda ECUs to be clear) where a bad crank or cam sensor, or some wiring issue involving those sensors, sent false signals to the ECU. The ECU then calibrates speed based on inaccurate sensor signals, and computes the incorrect engine speed. It happens, more than most would think.

Now I bet Honda is not going to want to hear that. They will completely look past the bad CKP/CMP sensor options and go straight to the "Driver Error" option. Kind of like all the experts on here have done, all having at or near 100% certainty that this is the only possible explanation, while simultaneously lacking both sufficient information on the actual events and the technical expertise to understand all the possible reasons for this to occur.

Glad to see you went and looked up the actual code to prove the point.
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