First CEL today! Advice?
- Thread starter whitemp5seattle
- Start date
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- carbon grey 2005 SP23 sedan
pretty darn sure! but not 100% sure (dunno)
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- 92 & 16 Meyatas
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- carbon grey 2005 SP23 sedan
ooo that's a cool website! thanks! *crosses fingers and hopes CEL doesn't come back tomorrow*
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- 92 & 16 Meyatas
whitemp5seattle said:
ya, who knows...maybe the gas cap was never tighten down enough...you'll find out soon enough!!
So you cleared the CEL code and its still gone?
If it isnt the gas cap, you could have a leak from from the vacuum line to the intake manifold from the evap sensor/switch.
Theres a sensor that connects on one side to the intake mani, and the other side to the charcoal canister. If that has a leak or if that sensor is malfuctioning it will cause grief and pull a code.
Hope it was just your fuel cap tho.
If it isnt the gas cap, you could have a leak from from the vacuum line to the intake manifold from the evap sensor/switch.
Theres a sensor that connects on one side to the intake mani, and the other side to the charcoal canister. If that has a leak or if that sensor is malfuctioning it will cause grief and pull a code.
Hope it was just your fuel cap tho.
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- carbon grey 2005 SP23 sedan
Luni said:
it's still gone...but I only drove it for a few miles after I had the code cleared. Tomorrow I'll drive about 40 miles with it, and Saturday I'll drive about 400 miles, so we'll see!
OBD2 is anal.
If you were gonna pull a code, it would happen pretty quick.
On my 2000 Celica, I was pulling a code for lean condition. It was due to a dirty MAF sensor. I didnt clean the right part of the sensor, cleared the ECU of codes and within 15 minutes of driving that code came right back.
OBD2s tolerance of being out of spec is pretty low, so if it was still problematic, it SHOULD have pulled a CEL by now within 40 minutes.
If you were gonna pull a code, it would happen pretty quick.
On my 2000 Celica, I was pulling a code for lean condition. It was due to a dirty MAF sensor. I didnt clean the right part of the sensor, cleared the ECU of codes and within 15 minutes of driving that code came right back.
OBD2s tolerance of being out of spec is pretty low, so if it was still problematic, it SHOULD have pulled a CEL by now within 40 minutes.
lol I've seen more than that. When I forgot to plug my downstream O2 back in after the header install, after clearing the CEL, I could start the car then drive it as long as I want, the CEL wouldn't come back on until I turned off the enging and started it a 2nd time
kudakev615
Member
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- pro5
it all depends on the severity of the code. say for instance you unplug the intake air temp sensor and the light will come right on. if its something like a evap code, the computer will have to go thru its evap cycles a few times before it will throw a code.
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- carbon grey 2005 SP23 sedan
it didn't come back today! and I drove it 40 miles - 20 miles each way to work. (2thumbs)
This Saturday I'll drive it almost 500 miles, so I'll definitely know by then!
This Saturday I'll drive it almost 500 miles, so I'll definitely know by then!
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- 92 & 16 Meyatas
whitemp5seattle said:
cool! see you tomorrow
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- carbon grey 2005 SP23 sedan
(yippy)
02Silver2.0
Member
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- 2002 Mazda Protege 5
Hi Guys, I had the CEL come on today, so I checked it with a reader. It gave me P 0421, which is Warm Up Catalyst Efficiency Below Threshold (Bank 1).
What is this specifically?
What is this specifically?
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- carbon grey 2005 SP23 sedan
do a search - you'll get much better results...
http://www.mazdas247.com/forum/search.php?searchid=3114526
http://www.mazdas247.com/forum/search.php?searchid=3114526
