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P0141 code in 03 Accord LX 4cylnder

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Old Apr 21, 2007 | 11:19 AM
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Default P0141 code in 03 Accord LX 4cylnder

First step is to reset the ECU.

I saw in another thread that this is done by pulling the 7.5 amp 'clock fuse' in the drivers side fuse box...

can anyone clairify which fuse this is? I dont see one lsited as a 'clock' fuse in the manual, and the radio fuse is a 10a...
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Old Apr 21, 2007 | 12:12 PM
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OK, found a few other threads that referred to the 'radio' fuse a 10a fuse...

pulled that one, had lunch, restarted, same error code.

Autozone sells a Bosch secondary O2 sensor for $58.

I looked and see where the sensor is, have a socket for it (slotted for the wires) and all that jazz, but the wires go into a grommet in the underbody,a nd I have no idea where they terminate/connect.

anyone care to point me in the right direction?

(or better yet, hook me up with the FSM in pdf format)
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Old Apr 22, 2007 | 03:53 PM
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Originally Posted by y2knole
OK, found a few other threads that referred to the 'radio' fuse a 10a fuse...

pulled that one, had lunch, restarted, same error code.

Autozone sells a Bosch secondary O2 sensor for $58.

I looked and see where the sensor is, have a socket for it (slotted for the wires) and all that jazz, but the wires go into a grommet in the underbody,a nd I have no idea where they terminate/connect.

anyone care to point me in the right direction?

(or better yet, hook me up with the FSM in pdf format)
if you are referring to the catalytic converter o2 sensor, the connector is there, just a tad bit further up into the underbody. It is a grey connector.
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Old Apr 22, 2007 | 07:27 PM
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Your car will kick back the Bosch most likely. I've seen Honda's play nice with them in rare instances. Play it safe, get an OEM sensor.
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Old Apr 23, 2007 | 11:16 AM
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thanks for the tip on the Bosch sensor... I will go OEM or go home.

now for the money question...

can anyone give me some instructions on how to verify that it IS in fact a bad sensor, and not a wiring issue external to the O2 sensor itself?

and I followed those wires back a ways, and they disappear into the underside of the car through a rubber grommit before hitting any connectors that I could see...

thanks in advance.
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Old Apr 23, 2007 | 05:04 PM
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Get a friend to get under the car and gently pull the wires so you can inspect up top to see where they emerge.
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Old Apr 24, 2007 | 04:26 AM
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P0141 is for the heater circuit of the 2nd sensor. Two of it's wires are the same color (black?). Once you figure out how to unplug the sensor, measure the resistance between those 2 same-color wires of the sensor. It should be between 10 & 40 ohms.

If that's OK, then the problem is in the wiring of the car. Find the 2 wires that correspond to those 2 (don't know what colors). One should be hot (battery voltage) & the other should be grounded when the engine is running.
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Old Apr 24, 2007 | 02:25 PM
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Originally Posted by JimBlake
P0141 is for the heater circuit of the 2nd sensor. Two of it's wires are the same color (black?). Once you figure out how to unplug the sensor, measure the resistance between those 2 same-color wires of the sensor. It should be between 10 & 40 ohms.

If that's OK, then the problem is in the wiring of the car. Find the 2 wires that correspond to those 2 (don't know what colors). One should be hot (battery voltage) & the other should be grounded when the engine is running.
thank you kind sir
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Old Apr 25, 2007 | 07:44 AM
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I think I found what I need for replacing the sensor...

http://www.autoboardz.com/-ftopict189160.html
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Old Apr 25, 2007 | 09:11 AM
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Oh dang... Now I just can't wait for the O2 sensor to go on my '03 Accord. Who's bright idea was it to bury the plug so you have to remove the front seat??
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