Codes C1555 and C0700, cylinders 2 and 3 misfire, engine coolant high circuit?

Tiny
BURNTSOGGY
  • MEMBER
  • 2012 HONDA ACCORD
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 70,000 MILES
Misfire in cylinder 2 and 3 with additional codes C1555 and C0700.

I performed the following
Compression test all 4 @150 PSI.
Spark plugs replaced.
Coils replaced.
VVT solenoid replaced.
Crankshaft sensor replaced.

Still receiving the same codes. This is my daughter's car. Only other information that was given is that "it acts up after refueling and is normally fine after a few minutes.
Wednesday, November 15th, 2023 AT 11:22 AM

4 Replies

Tiny
BURNTSOGGY
  • MEMBER
  • 3 POSTS
Random misfire code also presented itself once but never since it was cleared. Also not driven since problem, other than starting car in a fixed position in driveway.
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Wednesday, November 15th, 2023 AT 11:25 AM
Tiny
AL514
  • MECHANIC
  • 4,675 POSTS
Hello, if it's after refueling then check to see if the Purge valve is sticking open, just take it off the vehicle and you shouldn't be able to blow air through it when it's not energized. When refueling does she stop filling it at the gas station when the handle clicks off, or does she try to add more fuel by pulling the fill handle out a little bit? Some people will actually over fill the gas tank with that method and fuel ends up in the vapor management system (Evap). Or it could just be a sticking Purge valve. I'll post a diagram of where the Purge valve is. It looks like it might have a check valve just behind it on the hose that fuel vapors are drawn through. What are those other codes reading as, I don't see them in service information.

Here is the location of the Purge valve, it's on the left (driver side) of the engine. One hose goes to the Intake manifold and the other is to the fuel vapor management system, which is back near the gas tank. Just unplug the connector, take the 2 hoses off and unbolt the valve so you can have better access to it. You shouldn't be able to blow and air through it from the vapor side. The side going to the Intake manifold is going to be drawn on by manifold vacuum. So, if the valve is stuck open, it will fill the intake manifold with fuel vapors causing starting and misfires issues that will clear up after a couple minutes. If your scan tool has the code definitions for those 2 codes, could you post them, I'm going to search other locations for them as well.

One of the codes might be something to do with the Evap system or Fuel tank pressure sensor signal.
With the misfires that happened and if this turns out to be a faulty Purge valve, make sure you change the oil after the repair. The oil will be contaminated with fuel due to the misfires and can cause an overly rich mixture through the PCV system.

A couple locations are stating the C1555 has possibly something to do with the scan tool being used, its reading "the scanner used is incompatible". Many other locations do not even list this code. The C0700 code does not present either, so I would just get the current issue resolved first, clear those codes and see if they come back after the repair.

https://www.2carpros.com/articles/how-emission-control-systems-work

https://www.2carpros.com/articles/evap-system-code-repair
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Wednesday, November 15th, 2023 AT 1:02 PM
Tiny
BURNTSOGGY
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Changed the purge control solenoid.

No change. It starts after about 3 turns, runs fine for about 60-90 seconds then the code comes back on.

Auto store guy suggested Also picking up vacuum switch valve. They were out so I will get one this afternoon.

Attached screenshot for what I could find on C1555.
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Thursday, November 16th, 2023 AT 6:34 AM
Tiny
AL514
  • MECHANIC
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Oh, okay, I was just suggesting trying to blow air through the Purge valve to see if it was sticking open, usually a starting issue after refueling has something to do with the Evap (fuel vapor management system). If you can't blow air through the original Purge valve I would put that one back on the vehicle for now, since it's the OEM Honda part. The one you got is most likely an aftermarket part.

So, the C1555 code is the only code you're getting, correct? The code definition is a bit odd, stating that its the number 1 cylinder fuel injector circuit being low, but then also stating the Crankshaft position sensor B circuit malfunction. I would think a circuit issue with a fuel injector would set a misfire code as well. When you say it starts after 3 turns, do you mean the engine starts after cranking over, or do you mean actually turning the wheel this code will set?
Its pretty easy to check a fuel injector circuit, but I don't see how an injector would set a Chassis code. Is the C0700 code setting as well still?

I see a different code definition at another location C1555 is "Steering Wheel sensor out of range" which would make more sense being a chassis code, but is the vehicle still hard to start? Or is this something to do with actually turning the wheel?

This vehicle does have a Steering Angle Sensor which is part of the VSA system which incorporates the ABS, Electronic Brake Distribution, Traction control, Vehicle Stability Assist (VSA) and Brake Assist components. So, if turning the steering wheel sets this code, it might be something to do with the Steering angle sensor. Sometimes they need to be recalibrated with a capable scan tool. The scan tool would need to be able to communicate with the VSA module to calibrate all the sensors. There are multiple sensors along with the Steering angle, such as the Yaw Rate-lateral acceleration sensor which is an input for the actual angle of tilt the vehicle makes when turning, even though it is such a small amount, these sensors are very sensitive. The wheel speed sensors which input to the ABS module. I'm going to look at some other locations for any information on the C1555, because I don't think it has anything to do with the crankshaft sensor or injector wiring.

And what code set for Engine coolant high circuit, that would cause a starting issue since the engine coolant temperature sensor is one of the main inputs on starting.
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Thursday, November 16th, 2023 AT 11:55 AM

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