Troublecode 0420: PCM as determined that he catalyst system efficiency....
Took daughter's 99 Accord LX (4 cyl) to Autozone for CEL check. Their
rudimentary device gave this code and message: Code 0420: The PCM has determined that the catalyst system efficiency for bank 1 is below threshold for the current engine operating conditions. I suspect front O2 sensor based on some research I've done on the web. Any ideas, other than paying the dealer $75 for the full diagnosis? Thanks...TH |
Re: Troublecode 0420: PCM as determined that he catalyst system efficiency....
"Strorg" <strorg@strorg.org> wrote in message news:ob6dnSmMk5S9Qj-iRVn-gg@comcast.com... > Took daughter's 99 Accord LX (4 cyl) to Autozone for CEL check. Their > rudimentary device gave this code and message: > > Code 0420: The PCM has determined that the catalyst system efficiency for > bank 1 is below threshold for the current engine operating conditions. > > I suspect front O2 sensor based on some research I've done on the web. Any > ideas, other than paying the dealer $75 for the full diagnosis? > > Thanks...TH > Be advised the warranty for cat converters is a federal mandate in USA of 8 years or 80,000 miles. This also happens to be about the mileage that they tend to die... The rear 02 sensor (only one bank on a 4cyl) is actualy the one that measures cat efficiency. Most common cause of this code is a dead cat. Peace. |
Re: Troublecode 0420: PCM as determined that he catalyst system efficiency....
"Strorg" <strorg@strorg.org> wrote in message news:ob6dnSmMk5S9Qj-iRVn-gg@comcast.com... > Took daughter's 99 Accord LX (4 cyl) to Autozone for CEL check. Their > rudimentary device gave this code and message: > > Code 0420: The PCM has determined that the catalyst system efficiency for > bank 1 is below threshold for the current engine operating conditions. > > I suspect front O2 sensor based on some research I've done on the web. Any > ideas, other than paying the dealer $75 for the full diagnosis? > > Thanks...TH > Be advised the warranty for cat converters is a federal mandate in USA of 8 years or 80,000 miles. This also happens to be about the mileage that they tend to die... The rear 02 sensor (only one bank on a 4cyl) is actualy the one that measures cat efficiency. Most common cause of this code is a dead cat. Peace. |
Re: Troublecode 0420: PCM as determined that he catalyst system efficiency....
"Strorg" <strorg@strorg.org> wrote in message news:ob6dnSmMk5S9Qj-iRVn-gg@comcast.com... > Took daughter's 99 Accord LX (4 cyl) to Autozone for CEL check. Their > rudimentary device gave this code and message: > > Code 0420: The PCM has determined that the catalyst system efficiency for > bank 1 is below threshold for the current engine operating conditions. > > I suspect front O2 sensor based on some research I've done on the web. Any > ideas, other than paying the dealer $75 for the full diagnosis? > > Thanks...TH > Be advised the warranty for cat converters is a federal mandate in USA of 8 years or 80,000 miles. This also happens to be about the mileage that they tend to die... The rear 02 sensor (only one bank on a 4cyl) is actualy the one that measures cat efficiency. Most common cause of this code is a dead cat. Peace. |
Re: Troublecode 0420: PCM as determined that he catalyst system efficiency....
"Strorg" <strorg@strorg.org> wrote in message news:ob6dnSmMk5S9Qj-iRVn-gg@comcast.com... > Took daughter's 99 Accord LX (4 cyl) to Autozone for CEL check. Their > rudimentary device gave this code and message: > > Code 0420: The PCM has determined that the catalyst system efficiency for > bank 1 is below threshold for the current engine operating conditions. > > I suspect front O2 sensor based on some research I've done on the web. Any > ideas, other than paying the dealer $75 for the full diagnosis? > > Thanks...TH > Be advised the warranty for cat converters is a federal mandate in USA of 8 years or 80,000 miles. This also happens to be about the mileage that they tend to die... The rear 02 sensor (only one bank on a 4cyl) is actualy the one that measures cat efficiency. Most common cause of this code is a dead cat. Peace. |
Re: Troublecode 0420: PCM as determined that he catalyst system efficiency....
"psychicmechanic" <psychicmechanic@hotmail.com> wrote in message news:DfydnQ29L6uR1j6iRVn-iQ@comcast.com... > > "Strorg" <strorg@strorg.org> wrote in message > news:ob6dnSmMk5S9Qj-iRVn-gg@comcast.com... > > Took daughter's 99 Accord LX (4 cyl) to Autozone for CEL check. Their > > rudimentary device gave this code and message: > > > > Code 0420: The PCM has determined that the catalyst system efficiency for > > bank 1 is below threshold for the current engine operating conditions. > > > > I suspect front O2 sensor based on some research I've done on the web. > Any > > ideas, other than paying the dealer $75 for the full diagnosis? > > > > Thanks...TH > > > Be advised the warranty for cat converters is a federal mandate in USA of 8 > years or 80,000 miles. This also happens to be about the mileage that they > tend to die... > > The rear 02 sensor (only one bank on a 4cyl) is actualy the one that > measures cat efficiency. Most common cause of this code is a dead cat. > > Peace. > > Figures....just broke 80K miles. |
Re: Troublecode 0420: PCM as determined that he catalyst system efficiency....
"psychicmechanic" <psychicmechanic@hotmail.com> wrote in message news:DfydnQ29L6uR1j6iRVn-iQ@comcast.com... > > "Strorg" <strorg@strorg.org> wrote in message > news:ob6dnSmMk5S9Qj-iRVn-gg@comcast.com... > > Took daughter's 99 Accord LX (4 cyl) to Autozone for CEL check. Their > > rudimentary device gave this code and message: > > > > Code 0420: The PCM has determined that the catalyst system efficiency for > > bank 1 is below threshold for the current engine operating conditions. > > > > I suspect front O2 sensor based on some research I've done on the web. > Any > > ideas, other than paying the dealer $75 for the full diagnosis? > > > > Thanks...TH > > > Be advised the warranty for cat converters is a federal mandate in USA of 8 > years or 80,000 miles. This also happens to be about the mileage that they > tend to die... > > The rear 02 sensor (only one bank on a 4cyl) is actualy the one that > measures cat efficiency. Most common cause of this code is a dead cat. > > Peace. > > Figures....just broke 80K miles. |
Re: Troublecode 0420: PCM as determined that he catalyst system efficiency....
"psychicmechanic" <psychicmechanic@hotmail.com> wrote in message news:DfydnQ29L6uR1j6iRVn-iQ@comcast.com... > > "Strorg" <strorg@strorg.org> wrote in message > news:ob6dnSmMk5S9Qj-iRVn-gg@comcast.com... > > Took daughter's 99 Accord LX (4 cyl) to Autozone for CEL check. Their > > rudimentary device gave this code and message: > > > > Code 0420: The PCM has determined that the catalyst system efficiency for > > bank 1 is below threshold for the current engine operating conditions. > > > > I suspect front O2 sensor based on some research I've done on the web. > Any > > ideas, other than paying the dealer $75 for the full diagnosis? > > > > Thanks...TH > > > Be advised the warranty for cat converters is a federal mandate in USA of 8 > years or 80,000 miles. This also happens to be about the mileage that they > tend to die... > > The rear 02 sensor (only one bank on a 4cyl) is actualy the one that > measures cat efficiency. Most common cause of this code is a dead cat. > > Peace. > > Figures....just broke 80K miles. |
Re: Troublecode 0420: PCM as determined that he catalyst system efficiency....
"psychicmechanic" <psychicmechanic@hotmail.com> wrote in message news:DfydnQ29L6uR1j6iRVn-iQ@comcast.com... > > "Strorg" <strorg@strorg.org> wrote in message > news:ob6dnSmMk5S9Qj-iRVn-gg@comcast.com... > > Took daughter's 99 Accord LX (4 cyl) to Autozone for CEL check. Their > > rudimentary device gave this code and message: > > > > Code 0420: The PCM has determined that the catalyst system efficiency for > > bank 1 is below threshold for the current engine operating conditions. > > > > I suspect front O2 sensor based on some research I've done on the web. > Any > > ideas, other than paying the dealer $75 for the full diagnosis? > > > > Thanks...TH > > > Be advised the warranty for cat converters is a federal mandate in USA of 8 > years or 80,000 miles. This also happens to be about the mileage that they > tend to die... > > The rear 02 sensor (only one bank on a 4cyl) is actualy the one that > measures cat efficiency. Most common cause of this code is a dead cat. > > Peace. > > Figures....just broke 80K miles. |
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