Question about Honda CRV
Check engine light code p1456
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Posted on Jan 02, 2017
P0420 relates to the catalytic converter. The computer sees little or no improvement in the exhaust before and after going through the converter. Either your oxygen sensors need replacement (3 total) or you need a new catalytic converter.
What is the mileage on the vehicle? Does it run well? Oxygen sensors generally start to fail after 70,000 miles. Catalytic converters usually fail because the engine is runnig rich and the owner ignores that fault for months. This causes the catalytic converter to overheat and fail.
P1456 relates to the evaporative emission system. This system holds the gas fumes in the system so they are not vented to the atmosphere. The most common cause of this code being set is failing to properly tighten the gas cap after refueling. Take the cap off and clean the sealing O-ring. Put it back on and tighten till it clicks 3 times. Make sure you have the correct gray colored gas cap. Clear the code and see if it resets within a few days. If it does, try replacing the gas cap.
Posted on Jun 26, 2008
Hey I had the same code and I have a 2000 honda civic lx. My cousin
works at honda and drives a '96 honda civic and he has had that code
before on his car as well.
First thing he came up with was that the catalytic converter was cracked. We checked mines, and lo and behold, that's what it was.
Look under your hood, and there should be a catalytic converter with a sensor sticking out of it. It is connected to the exhaust manifold and the sensor sticks out of the heat shield. Around the sensor, look for a crack. If there's a crack, that's your problem.
Posted on May 03, 2009
the check engine lamp is not affected by things like tyres, brakes etc. It shows that the vehicles engine management system had detected a fault with the engine or engine sensors. Check the engine for broken or disconnected wiring (maybe it was disconnected during the replacing of the hoses but not reconnected). If you fail to locate anything, check the manual for the correct fault code retrieval procedure or take the vehicle to a professional. Tyres may affect your ABS system or Airbag systems but they usually have their own warning lamp and are unrelated to the check engine lamp..
Posted on Dec 15, 2009
I would send the car for a smoke test for the emissions leak...Find out where the leak is comming from..Repair it..Reset the codes, then do a drive cycle and see what happens...
Posted on Feb 19, 2010
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