Jim Yanik <jyanik@abuse.gov> wrote in
news:Xns9848C1F781787jyanikkuanet@129.250.170.86:

> "TeGGeR®" <tegger@tegger.c0m> wrote in
> news:Xns9848BE6E0916tegger@207.14.116.130:
>
>
>>
>> Do you know the EXACT alphanumeric numeric code that was recorded?
>> This is critical. Most O2 sensor failures these days have to do with
>> the heater circuit.
>
> I wonder why the O2 sensor needs a heater? It's already in the hot
> exhaust. Perhaps to get the sensor up to operating temp quicker? (to
> shorten the open loop time)



The heater is intended not only to ensure fast warmup, but to make
certain the O2 sensor always remains above 750F.

The oxygen sensor needs to be at 750F to be fully operational. Even
though combustion chamber temperatures are about 2,100F, it is possible
under certain circumstances for the exhaust temperature to drop below
750F by the time it reaches the sensor. This would result in degraded
performance and increased emissions.

In addition, EPA regulations force the newest cars to use a variant of
the oxygen sensor called an "air-fuel ratio sensor". This particular
design requires to be at 1,500F before it is fully functional, and that
temperature is impossible to maintain without a heater.



--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

 

benjaminjones1@gmail.com wrote:

> Incorrect Valve Adjustment Fallout...

>
> I need to know if the O2 error could be contributed to the incorrect
> vale adjustment (excess vibrations) and if there is anything else I
> should be looking out for because of the incorrect work.

Betcha somebody used a silicone lube or cleaner on the intake system
and it got on the end of the oxygen sensor and corrupted it. bob

 

benjaminjones1@gmail.com wrote:

> Incorrect Valve Adjustment Fallout...

>
> I need to know if the O2 error could be contributed to the incorrect
> vale adjustment (excess vibrations) and if there is anything else I
> should be looking out for because of the incorrect work.

Betcha somebody used a silicone lube or cleaner on the intake system
and it got on the end of the oxygen sensor and corrupted it. bob

 

benjaminjones1@gmail.com wrote:

> Incorrect Valve Adjustment Fallout...

>
> I need to know if the O2 error could be contributed to the incorrect
> vale adjustment (excess vibrations) and if there is anything else I
> should be looking out for because of the incorrect work.

Betcha somebody used a silicone lube or cleaner on the intake system
and it got on the end of the oxygen sensor and corrupted it. bob

 

The check engine light code was PO-131 which is 0-2 Bank 1 Senor 1...
does this help?

TeGGeR® wrote:
> Jim Yanik <jyanik@abuse.gov> wrote in
> news:Xns9848C1F781787jyanikkuanet@129.250.170.86:
>
> > "TeGGeR®" <tegger@tegger.c0m> wrote in
> > news:Xns9848BE6E0916tegger@207.14.116.130:
> >
> >
> >>
> >> Do you know the EXACT alphanumeric numeric code that was recorded?
> >> This is critical. Most O2 sensor failures these days have to do with
> >> the heater circuit.
> >
> > I wonder why the O2 sensor needs a heater? It's already in the hot
> > exhaust. Perhaps to get the sensor up to operating temp quicker? (to
> > shorten the open loop time)
>
>
>
> The heater is intended not only to ensure fast warmup, but to make
> certain the O2 sensor always remains above 750F.
>
> The oxygen sensor needs to be at 750F to be fully operational. Even
> though combustion chamber temperatures are about 2,100F, it is possible
> under certain circumstances for the exhaust temperature to drop below
> 750F by the time it reaches the sensor. This would result in degraded
> performance and increased emissions.
>
> In addition, EPA regulations force the newest cars to use a variant of
> the oxygen sensor called an "air-fuel ratio sensor". This particular
> design requires to be at 1,500F before it is fully functional, and that
> temperature is impossible to maintain without a heater.
>
>
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/

 

The check engine light code was PO-131 which is 0-2 Bank 1 Senor 1...
does this help?

TeGGeR® wrote:
> Jim Yanik <jyanik@abuse.gov> wrote in
> news:Xns9848C1F781787jyanikkuanet@129.250.170.86:
>
> > "TeGGeR®" <tegger@tegger.c0m> wrote in
> > news:Xns9848BE6E0916tegger@207.14.116.130:
> >
> >
> >>
> >> Do you know the EXACT alphanumeric numeric code that was recorded?
> >> This is critical. Most O2 sensor failures these days have to do with
> >> the heater circuit.
> >
> > I wonder why the O2 sensor needs a heater? It's already in the hot
> > exhaust. Perhaps to get the sensor up to operating temp quicker? (to
> > shorten the open loop time)
>
>
>
> The heater is intended not only to ensure fast warmup, but to make
> certain the O2 sensor always remains above 750F.
>
> The oxygen sensor needs to be at 750F to be fully operational. Even
> though combustion chamber temperatures are about 2,100F, it is possible
> under certain circumstances for the exhaust temperature to drop below
> 750F by the time it reaches the sensor. This would result in degraded
> performance and increased emissions.
>
> In addition, EPA regulations force the newest cars to use a variant of
> the oxygen sensor called an "air-fuel ratio sensor". This particular
> design requires to be at 1,500F before it is fully functional, and that
> temperature is impossible to maintain without a heater.
>
>
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/

 

The check engine light code was PO-131 which is 0-2 Bank 1 Senor 1...
does this help?

TeGGeR® wrote:
> Jim Yanik <jyanik@abuse.gov> wrote in
> news:Xns9848C1F781787jyanikkuanet@129.250.170.86:
>
> > "TeGGeR®" <tegger@tegger.c0m> wrote in
> > news:Xns9848BE6E0916tegger@207.14.116.130:
> >
> >
> >>
> >> Do you know the EXACT alphanumeric numeric code that was recorded?
> >> This is critical. Most O2 sensor failures these days have to do with
> >> the heater circuit.
> >
> > I wonder why the O2 sensor needs a heater? It's already in the hot
> > exhaust. Perhaps to get the sensor up to operating temp quicker? (to
> > shorten the open loop time)
>
>
>
> The heater is intended not only to ensure fast warmup, but to make
> certain the O2 sensor always remains above 750F.
>
> The oxygen sensor needs to be at 750F to be fully operational. Even
> though combustion chamber temperatures are about 2,100F, it is possible
> under certain circumstances for the exhaust temperature to drop below
> 750F by the time it reaches the sensor. This would result in degraded
> performance and increased emissions.
>
> In addition, EPA regulations force the newest cars to use a variant of
> the oxygen sensor called an "air-fuel ratio sensor". This particular
> design requires to be at 1,500F before it is fully functional, and that
> temperature is impossible to maintain without a heater.
>
>
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/

 

benjaminjones1@gmail.com wrote in
news:1159213370.777901.50720@e3g2000cwe.googlegrou ps.com:

>> > "TeGGeR®" <tegger@tegger.c0m> wrote in
>> > news:Xns9848BE6E0916tegger@207.14.116.130:
>> >
>> >
>> >>
>> >> Do you know the EXACT alphanumeric numeric code that was recorded?
>> >> This is critical. Most O2 sensor failures these days have to do
>> >> with the heater circuit.
>
>
>
> The check engine light code was PO-131 which is 0-2 Bank 1 Senor 1...
> does this help?



That's P-zero, not P-oh.

The code is P0131, which according to Honda is:
Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit Low
Voltage

The sensor between the exhaust manifold and the cat is returning voltage
lower than it should be sending. If the wiring or connector is not
damaged or corroded, it sounds like you need a new oxygen sensor.

You have not indicated 4-cylinder or V6. If a V6, this is the sensor
attached to the front bank.

--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

 

benjaminjones1@gmail.com wrote in
news:1159213370.777901.50720@e3g2000cwe.googlegrou ps.com:

>> > "TeGGeR®" <tegger@tegger.c0m> wrote in
>> > news:Xns9848BE6E0916tegger@207.14.116.130:
>> >
>> >
>> >>
>> >> Do you know the EXACT alphanumeric numeric code that was recorded?
>> >> This is critical. Most O2 sensor failures these days have to do
>> >> with the heater circuit.
>
>
>
> The check engine light code was PO-131 which is 0-2 Bank 1 Senor 1...
> does this help?



That's P-zero, not P-oh.

The code is P0131, which according to Honda is:
Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit Low
Voltage

The sensor between the exhaust manifold and the cat is returning voltage
lower than it should be sending. If the wiring or connector is not
damaged or corroded, it sounds like you need a new oxygen sensor.

You have not indicated 4-cylinder or V6. If a V6, this is the sensor
attached to the front bank.

--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

 

benjaminjones1@gmail.com wrote in
news:1159213370.777901.50720@e3g2000cwe.googlegrou ps.com:

>> > "TeGGeR®" <tegger@tegger.c0m> wrote in
>> > news:Xns9848BE6E0916tegger@207.14.116.130:
>> >
>> >
>> >>
>> >> Do you know the EXACT alphanumeric numeric code that was recorded?
>> >> This is critical. Most O2 sensor failures these days have to do
>> >> with the heater circuit.
>
>
>
> The check engine light code was PO-131 which is 0-2 Bank 1 Senor 1...
> does this help?



That's P-zero, not P-oh.

The code is P0131, which according to Honda is:
Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit Low
Voltage

The sensor between the exhaust manifold and the cat is returning voltage
lower than it should be sending. If the wiring or connector is not
damaged or corroded, it sounds like you need a new oxygen sensor.

You have not indicated 4-cylinder or V6. If a V6, this is the sensor
attached to the front bank.

--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

 

Is there anyway that the O2 problem might be a result of my incorrect
valve adjustment b/c it happened soon afterwards? If not should I be
concerned with any other problems that might come after driving with
the incorrect valve adjustment for a month? My Honda is a 4-cylinder.

Thanks again for your help.

TeGGeR® wrote:
> benjaminjones1@gmail.com wrote in
> news:1159213370.777901.50720@e3g2000cwe.googlegrou ps.com:
>
> >> > "TeGGeR®" <tegger@tegger.c0m> wrote in
> >> > news:Xns9848BE6E0916tegger@207.14.116.130:
> >> >
> >> >
> >> >>
> >> >> Do you know the EXACT alphanumeric numeric code that was recorded?
> >> >> This is critical. Most O2 sensor failures these days have to do
> >> >> with the heater circuit.
> >
> >
> >
> > The check engine light code was PO-131 which is 0-2 Bank 1 Senor 1...
> > does this help?
>
>
>
> That's P-zero, not P-oh.
>
> The code is P0131, which according to Honda is:
> Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit Low
> Voltage
>
> The sensor between the exhaust manifold and the cat is returning voltage
> lower than it should be sending. If the wiring or connector is not
> damaged or corroded, it sounds like you need a new oxygen sensor.
>
> You have not indicated 4-cylinder or V6. If a V6, this is the sensor
> attached to the front bank.
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/

 

Is there anyway that the O2 problem might be a result of my incorrect
valve adjustment b/c it happened soon afterwards? If not should I be
concerned with any other problems that might come after driving with
the incorrect valve adjustment for a month? My Honda is a 4-cylinder.

Thanks again for your help.

TeGGeR® wrote:
> benjaminjones1@gmail.com wrote in
> news:1159213370.777901.50720@e3g2000cwe.googlegrou ps.com:
>
> >> > "TeGGeR®" <tegger@tegger.c0m> wrote in
> >> > news:Xns9848BE6E0916tegger@207.14.116.130:
> >> >
> >> >
> >> >>
> >> >> Do you know the EXACT alphanumeric numeric code that was recorded?
> >> >> This is critical. Most O2 sensor failures these days have to do
> >> >> with the heater circuit.
> >
> >
> >
> > The check engine light code was PO-131 which is 0-2 Bank 1 Senor 1...
> > does this help?
>
>
>
> That's P-zero, not P-oh.
>
> The code is P0131, which according to Honda is:
> Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit Low
> Voltage
>
> The sensor between the exhaust manifold and the cat is returning voltage
> lower than it should be sending. If the wiring or connector is not
> damaged or corroded, it sounds like you need a new oxygen sensor.
>
> You have not indicated 4-cylinder or V6. If a V6, this is the sensor
> attached to the front bank.
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/

 

Is there anyway that the O2 problem might be a result of my incorrect
valve adjustment b/c it happened soon afterwards? If not should I be
concerned with any other problems that might come after driving with
the incorrect valve adjustment for a month? My Honda is a 4-cylinder.

Thanks again for your help.

TeGGeR® wrote:
> benjaminjones1@gmail.com wrote in
> news:1159213370.777901.50720@e3g2000cwe.googlegrou ps.com:
>
> >> > "TeGGeR®" <tegger@tegger.c0m> wrote in
> >> > news:Xns9848BE6E0916tegger@207.14.116.130:
> >> >
> >> >
> >> >>
> >> >> Do you know the EXACT alphanumeric numeric code that was recorded?
> >> >> This is critical. Most O2 sensor failures these days have to do
> >> >> with the heater circuit.
> >
> >
> >
> > The check engine light code was PO-131 which is 0-2 Bank 1 Senor 1...
> > does this help?
>
>
>
> That's P-zero, not P-oh.
>
> The code is P0131, which according to Honda is:
> Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit Low
> Voltage
>
> The sensor between the exhaust manifold and the cat is returning voltage
> lower than it should be sending. If the wiring or connector is not
> damaged or corroded, it sounds like you need a new oxygen sensor.
>
> You have not indicated 4-cylinder or V6. If a V6, this is the sensor
> attached to the front bank.
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/

 

benjaminjones1@gmail.com wrote in
news:1159226632.562317.230410@m73g2000cwd.googlegr oups.com:

>
> TeGGeR® wrote:

>>
>> The code is P0131, which according to Honda is:
>> Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit Low
>> Voltage
>>
>> The sensor between the exhaust manifold and the cat is returning
>> voltage lower than it should be sending. If the wiring or connector
>> is not damaged or corroded, it sounds like you need a new oxygen
>> sensor.
>>
>> You have not indicated 4-cylinder or V6. If a V6, this is the sensor
>> attached to the front bank.
>
>
>
> Is there anyway that the O2 problem might be a result of my incorrect
> valve adjustment b/c it happened soon afterwards?



Highly unlikely. BUT...

1) The correct procedure for any MIL illumination with a new code is to
turn the light off, then see if it later comes back on again with the
same code. Was that done? Many errors are transient and do not recur.
2) You may wish to check with your dealer and see if there are any TSBs
involving a P0131 code on your VIN number.



> If not should I be
> concerned with any other problems that might come after driving with
> the incorrect valve adjustment for a month? My Honda is a 4-cylinder.
>


Does the car run fine now? If so, you're OK. The only real danger I can
see is the possibility of a burnt valve. If that were the case, a
compression test would identify that.



--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

 

benjaminjones1@gmail.com wrote in
news:1159226632.562317.230410@m73g2000cwd.googlegr oups.com:

>
> TeGGeR® wrote:

>>
>> The code is P0131, which according to Honda is:
>> Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit Low
>> Voltage
>>
>> The sensor between the exhaust manifold and the cat is returning
>> voltage lower than it should be sending. If the wiring or connector
>> is not damaged or corroded, it sounds like you need a new oxygen
>> sensor.
>>
>> You have not indicated 4-cylinder or V6. If a V6, this is the sensor
>> attached to the front bank.
>
>
>
> Is there anyway that the O2 problem might be a result of my incorrect
> valve adjustment b/c it happened soon afterwards?



Highly unlikely. BUT...

1) The correct procedure for any MIL illumination with a new code is to
turn the light off, then see if it later comes back on again with the
same code. Was that done? Many errors are transient and do not recur.
2) You may wish to check with your dealer and see if there are any TSBs
involving a P0131 code on your VIN number.



> If not should I be
> concerned with any other problems that might come after driving with
> the incorrect valve adjustment for a month? My Honda is a 4-cylinder.
>


Does the car run fine now? If so, you're OK. The only real danger I can
see is the possibility of a burnt valve. If that were the case, a
compression test would identify that.



--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/