2000 honda civic lx code p0420
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Location: bloomington, ca, 92316
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2000 honda civic lx code p0420
the code p0420 come out when i check my car with the ob2 it says input/turbine speed sensor A circuit Gear Ratio incorrect what is this and how can i fix it
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Re: 2000 honda civic lx code p0420 (h22civic88)
Beg to differ, I threw P0420 a few months back, went to muffler shop and got a stock-replacement-high-flow cat welded in, been gone since.
It usually indicates exactly what it says: That the catalytic converter is dead (mine was alllll burnt up after 240K miles!), not necessarily that the oxygen sensor is bad.
It usually indicates exactly what it says: That the catalytic converter is dead (mine was alllll burnt up after 240K miles!), not necessarily that the oxygen sensor is bad.
#6
Re: 2000 honda civic lx code p0420 (Davus)
I've had plenty of cars come in the shop and it was the o2 sensor, so everyone will encounter differences... I didnt say always, just I've had may fair share that the o2 was bad with that mil showing...
#7
Re: 2000 honda civic lx code p0420 (h22civic88)
My 2001 CRV threw this code after 139K miles. I replaced the cat with a NAPA factory replacement, the primary O2 sensor with a factory replacement, and the secondary O2 sensor with a Walker universal O2 sensor which I had to splice in because it had no plug (universal). After resetting the faults, the MIL continues with the code reading PO420. I suspect the universal sensor because the voltage reads either 0.00v or 1.25v....nothing in between. The voltage for the primary sensor bounces around from .120v to .720v, which I think is normal. I plan to replace the secondary universal sensor with an OE sensor. I'll follow up with my results after the ECM monitors reset .
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2stroke1971
Honda Civic / Del Sol (1992 - 2000)
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08-09-2016 03:33 PM