Question about 2004 Honda Accord

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2004 honda accord v6: check light comes and then goes off. Mechanic did hand held computer scan. code reads p2240 and he says oxygen sensor needs cleaning. Please advise, Harry.

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Hi.
that code means there is a fault at the bank 2 oxygen sensor.
as you stand at the frond of the car and look into the engine bay, the sensor is fitted to the middle of the exhaust manifold nearest to you. disconnect the wires on the plug, and i think it is a 22mm spanner or deep socket to remove it.
there are various proprietary oxygen sensor cleaners on the market, but there is no certainty that this will work. there could be an actual fault with the sensor, or it may be too dirty to clean.

if finances permit, i would recommending changing the sensor as a matter of course.

the ecu fault reading can be reset by removing the battery -ve lead for 30 minutes.
make sure you have the radio code before doing this as you will need to reset this as well.

if you only clean the sensor and the fault reading comes back, then you will have to change the sensor and reset the ecu again.

hope this helps.

Posted on Apr 03, 2011

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2004 honda accord with a code p2240, this code means the front air fuel sensor has high voltage, take note that there are two front sensors one on each manifold, the bad one is bank 2 sensor 1. Cleaning will not help this problem, you will need to check the wiring to the sensor and also check the connector to this sensor and if all looks good then just replace the sensor. the diffrence between an air fuel sensor and oxygen sensor is that the air fuel sensor does alot more than an oxygen sensor and costs more, the newwer cars use this air fuel sensor, they both look alike but are wired difrently.the location of this sensor is the front manifold sensor, look behing the radiator and you will see it going into manifold, good day.

Posted on Apr 03, 2011

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Posted on Jan 02, 2017

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Got Honda accord 2000 code po135 replaced 02 sensor and stil show same code



How to Diagnose a P0135 -Heater
Performance Bank 1 Sensor 1 (GM 3.5L)
January 31, 2012 Updated: October 29, 2014 Written by: Abraham Torres-Arredondo Article Id: 371

image_1.gifIf your check engine light is on and you have a diagnostic trouble code P0135 stored in the PCM's memory... then you've come to the right place to test and troubleshoot the upstream oxygen sensor.
A P0135 DTC says: HO2S Heater Performance Bank 1 Sensor 1... and this means that the PCM (Powertrain Control Module = Fuel Injection Computer) has detected a problem with the front oxygen sensor's heater element or a problem in the heater's circuit (wires).
In this tutorial, I'll show you how to check the oxygen (O2) sensor's heater element and the two circuits that feed it with power (10 to 12 Volts) and ground with a multimeter.
In case you're wondering, where the oxygen (O2) sensor that the code P0135 is accusing of being BAD is... this bad boy is located on the exhaust manifold and before the catalytic converter.
To help you navigate this article, here are its main points:
  1. Symptoms of a BAD Oxygen Sensor Heater Element.
  2. What Tools Do I Need to Test Code P0135?
  3. What Does the Heater Inside the Oxygen Sensor Do?
  4. Circuit Descriptions of the Downstream Oxygen Sensor.
  5. Start Here.
  6. TEST 1: Oxygen Sensor Bank 1 Sensor 1 Test.
  7. TEST 2: Checking 12 Volts to O2 Heater.
  8. TEST 3: Checking the O2 Heater's Ground Circuit.
  9. TEST 4: Ohming the O2 Heater Element.
  10. P0135 O2 Sensor Heater Test Summary.
Buying a Digital Multimeter for Automotive Diagnostic Testing (found at: easyautodiagnostics.com).
  • Scan Tool.
    1. Don't have one?... check out my recommendation: Abe's Scan Tool Recommendation.
  • Wire Piercing Probe.
    1. Although this tool is not an absolute must, if you do buy one, you'll realize just how easy it makes testing the voltages inside the wires.
    2. If you need to see what this tool looks like, you can see it here:Wire Piercing Probe.
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    Feb 03, 2015 | 2000 Honda Accord

    1 Answer

    How to get the engine codes on a 1997 Honda accord?


    Easiest thing is to go to Autozone as they have a hand held scanner that they'll pull codes for FREE!!! Yep, it's a great service. The most common type of codes are for catalytic converter (low flow catalyst) or even more commonly the oxygen sensor.

    For this car the OBD plug may be behind the ashtray. This will need to be pulled out to access the plug.

    Some times even just clearing the code will be helpful. When the scanner is connected, ask the Autozone tech to clear the codes for you. See if it comes back. Some times the computers get a little tempermental and flip on a light and they don't come back on. It's worth a shot. If it comes back on then you may need a repair.
    Also, has your engine been maintained, ie-tuneups? Poor plaugs SOMETIMES MAY cause the check engine light to come on.

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    I have a 2004 Honda civic that basically drops down to 5 mph after driving it for about an hour. The engine light will come on and then after a couple of hours its fine again to drive. It doesn't...


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    Jan 07, 2010 | 1995 Honda Accord

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