Help! Voltage Problem? (P0428)
02-06-2009, 10:51 AM
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Help! Voltage Problem? (P0428)
So my check engine light came on yesterday and after I took the car to autozone for a check engine light diagnosis, the following came up:OEM Number to Cross: P0428
The PCM has determined that the voltage signal from the catalyst temperature sensor for bank 1 is too high for the current engine operating conditions. (bank 1 identifies the location of cylinder 1, while bank 2 identifies the cylinders on the opposite bank)
Thanks!
02-06-2009, 11:28 AM
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Cat might be clogged.
What year is your car? Mileage?
Cat is covered under emissions for 8 years, 80,000 miles.
What year is your car? Mileage?
Cat is covered under emissions for 8 years, 80,000 miles.
02-06-2009, 01:23 PM
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Car Spec
It's a 2004 RX8 with 30,000 miles. My warranty is no longer in effect, but it's nice to hear about the 8 year CAT warranty 
. Has anyone ever come across this problem before?
. Has anyone ever come across this problem before?
02-06-2009, 01:29 PM
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yeah, maybe it's gunked up or something knocked it loose?
crawl under there and take a look.
Any other codes come up or just the 0428?
crawl under there and take a look.
Any other codes come up or just the 0428?
02-07-2009, 01:20 PM
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No more codes, jus that one. Come to think of it I think I did scrape the cars bottom while backing out recently...I will check it out! Umm what exactly am I looking for btw, any specific location for the O2 sensor?
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