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What causes a dtc p2A00 on a 2004 honda civic 1.7l v-tech

Check engine light is on and I scanned the codes and got p2A00 is the code is this the o2 sensor malfunctioning or is there another problem causing this issue?

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 36 Answers

SOURCE: code PO131

Code PO131 is O2 sensor circuit low voltage , bank 1, sensor 1. That sensor I would say is the one in the exhaust manifold. I would check voltage to the sensor from the computer. If the voltage is not 5 volts, then it could be a computer problem or a wiring problem. I have seen factory wiring and connectors give a voltage problem. Check for a damaged or burnt, pinched wire. You need to know for sure that the voltage is correct to the sensor. Intermittent problems are hard to trace , but patience and knowledge helps.

Posted on Mar 11, 2009

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  • 77 Answers

SOURCE: P1298 Code Fuel/Air Metering

Are you sure you wrote the correct code. According to Honda, P1298 is a high ELD circuit voltage. If what I just put is correct, Honda has a service bulletin as this is a common problem( it could be another fault, but this is the most likely choice).
The ELD has a bad solder joint. I have done several of these, you will need to replace the ELD, and this is how.

1 D/C the negative battery cable (make sure you know your radio code, it will be needed to use the radio again)
2 Unbolt the fuse box that is in the engine bay.
3 Attached to the fuse box underneath there is a plastic cover, remove this cover.
4 There is a 3 pin connector under this cover. Remove it
5 Flip the fuse box back over, there are 2 big fuses bolted down, a 40 A and a 80A
6 Under these fuses is the ELD, remove it and pull the bar that sticks out of it.
7 Stick the bar in the new ELD
8 Put everything back together. Do the idle learn (just idle the car for 10 minutes with no loads on such as radio, headlights etc..)


This is probably the first thing they will do if you bring it to Honda assuming the code you have is P1298.

Posted on May 07, 2009

  • 14036 Answers

SOURCE: 1998 honda accord check engine light on code p0141

SECONDARY HEATED O2 SENSOR HEATER CIRCUIT FAULT SENSOR 2.

Posted on Jun 09, 2009

  • 303 Answers

SOURCE: p 1705 code, honda civic lx 2001

Have tranny serviced . Check tranny fluid level fill with HONDA ONLY fluid. If not fixed have fluid drained and filter replaced on tranny

Posted on Jan 21, 2010

Testimonial: "thanks u very much. the problem has been resolved. very good advice."

  • 67 Answers

SOURCE: 2001 Honda - New Catalytics & O2 sensors -- new 0420/1739/1456

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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Code PO131


Code PO131 is O2 sensor circuit low voltage , bank 1, sensor 1. That sensor I would say is the one in the exhaust manifold. I would check voltage to the sensor from the computer. If the voltage is not 5 volts, then it could be a computer problem or a wiring problem. I have seen factory wiring and connectors give a voltage problem. Check for a damaged or burnt, pinched wire. You need to know for sure that the voltage is correct to the sensor. Intermittent problems are hard to trace , but patience and knowledge helps.

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