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#1: new cat and 02 sensor; old error code

Posted on 2006-07-19 10:37:37 by honda_part_jockey

sounded like rocks loose in catalytic converter on 99 honda accord,
4-cyl, 4-door dx 5 spd.

replaced cat with aftermarket can. no more loose rocks.

problem solved.

uhh...no.

a few days later, got a "check engine" light. error light flash code 67
(P0401): "catalytic converter efficiency low." checked the cat's O2
sensor. heater resistance was too high.

replaced the sensor.

problem solved.

uhh...no.

a month later the "check engine light" and error 67 are back.

what's my next move?

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#2: Re: new cat and 02 sensor; old error code

Posted on 2006-07-23 03:32:32 by chip

On 19 Jul 2006 01:37:37 -0700, "honda_part_jockey"
&lt;<a href="mailto:stmashaw&#64;gmail.com" target="_blank">stmashaw&#64;gmail.com</a>&gt; wrote:

&gt;sounded like rocks loose in catalytic converter on 99 honda accord,
&gt;4-cyl, 4-door dx 5 spd.
&gt;
&gt;replaced cat with aftermarket can. no more loose rocks.
&gt;
&gt;problem solved.
&gt;
&gt;uhh...no.
&gt;
&gt;a few days later, got a &quot;check engine&quot; light. error light flash code 67
&gt;(P0401): &quot;catalytic converter efficiency low.&quot; checked the cat's O2
&gt;sensor. heater resistance was too high.
&gt;
&gt;replaced the sensor.
&gt;
&gt;problem solved.
&gt;
&gt;uhh...no.
&gt;
&gt;a month later the &quot;check engine light&quot; and error 67 are back.
&gt;
&gt;what's my next move?



A P0401 is a code for a restricted egr flow. A p0420 is for the
CAT. figure out what code you really have and get back to us

Report this message

#3: Re: new cat and 02 sensor; old error code

Posted on 2006-07-23 05:24:24 by honda_part_jockey

my mistake. the light-flash code was 67, which according to the haynes
manual is P0420. i wrote the wrong one.


chip wrote:
&gt; On 19 Jul 2006 01:37:37 -0700, &quot;honda_part_jockey&quot;
&gt; &lt;<a href="mailto:stmashaw&#64;gmail.com" target="_blank">stmashaw&#64;gmail.com</a>&gt; wrote:
&gt;
&gt; &gt;sounded like rocks loose in catalytic converter on 99 honda accord,
&gt; &gt;4-cyl, 4-door dx 5 spd.
&gt; &gt;
&gt; &gt;replaced cat with aftermarket can. no more loose rocks.
&gt; &gt;
&gt; &gt;problem solved.
&gt; &gt;
&gt; &gt;uhh...no.
&gt; &gt;
&gt; &gt;a few days later, got a &quot;check engine&quot; light. error light flash code 67
&gt; &gt;(P0401): &quot;catalytic converter efficiency low.&quot; checked the cat's O2
&gt; &gt;sensor. heater resistance was too high.
&gt; &gt;
&gt; &gt;replaced the sensor.
&gt; &gt;
&gt; &gt;problem solved.
&gt; &gt;
&gt; &gt;uhh...no.
&gt; &gt;
&gt; &gt;a month later the &quot;check engine light&quot; and error 67 are back.
&gt; &gt;
&gt; &gt;what's my next move?
&gt;
&gt;
&gt;
&gt; A P0401 is a code for a restricted egr flow. A p0420 is for the
&gt; CAT. figure out what code you really have and get back to us

Report this message