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CEL on my S/C'd TC

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Old 12-19-2005 | 04:31 PM
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Default CEL on my S/C'd TC
I recenlty got a code PO420 (front O2) on my TC. I was driving normal, not beating on it and doing about 50mph. Any ideas what could have caused this?
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Old 12-19-2005 | 05:00 PM
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you rockin a header?
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Old 12-19-2005 | 05:04 PM
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Originally Posted by Simplyscion
you rockin a header?
That wouldn't throw the code for the front O2. A header throws a cat converter code. Unless the first O2 was damaged when the person took it out when they put the header in.
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Old 12-19-2005 | 05:07 PM
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Originally Posted by Munch
Originally Posted by Simplyscion
you rockin a header?
Unless the first O2 was damaged when the person took it out when they put the header in.

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Old 12-19-2005 | 05:21 PM
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Yup, sounds like the first 02 sensor is toast. Even worse...that 02 sensor is stupid expensive.
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Old 12-19-2005 | 05:23 PM
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Give us alittle more information about your setup, and we can help you better.
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Old 12-19-2005 | 05:25 PM
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Originally Posted by ScionDad
Yup, sounds like the first 02 sensor is toast. Even worse...that 02 sensor is stupid expensive.
Tell me about it. I couldn't get mine out of my stock header. So instead of damaging it. I just brought a new one. That's why Vito (simplyscion) is laughing. The new air/fuel sensor is right around $225.
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Old 12-19-2005 | 05:35 PM
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Originally Posted by Munch
Give us alittle more information about your setup, and we can help you better.
I do not have a header and i never touched the O2. Its plugged in and all secure after the S/C install.
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Old 12-19-2005 | 05:37 PM
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You are getting an O2 sensor problem.... You may reset it once and then take it to the dealer if it continues to plague you...
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Old 12-19-2005 | 05:45 PM
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Originally Posted by Munch
Originally Posted by ScionDad
Yup, sounds like the first 02 sensor is toast. Even worse...that 02 sensor is stupid expensive.
Tell me about it. I couldn't get mine out of my stock header. So instead of damaging it. I just brought a new one. That's why Vito (simplyscion) is laughing. The new air/fuel sensor is right around $225.
$225....That's just price gouging
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Old 12-19-2005 | 05:47 PM
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^ It's proprietary as well, so no easy bosch replacements either.... definately an engineer smiling for that one.... making toyota some extra cash...
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Old 12-19-2005 | 05:49 PM
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Originally Posted by SuperWTC
Originally Posted by Munch
Give us alittle more information about your setup, and we can help you better.
I do not have a header and i never touched the O2. Its plugged in and all secure after the S/C install.
Warranty
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Old 12-19-2005 | 05:50 PM
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Originally Posted by ScionDad
Originally Posted by Munch
Originally Posted by ScionDad
Yup, sounds like the first 02 sensor is toast. Even worse...that 02 sensor is stupid expensive.
Tell me about it. I couldn't get mine out of my stock header. So instead of damaging it. I just brought a new one. That's why Vito (simplyscion) is laughing. The new air/fuel sensor is right around $225.
$225....That's just price gouging
I didn't pay that much, but that's the going rate and also what I was quoted over the phone for one. I got it much cheaper thanks to my boy.
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Old 12-19-2005 | 05:50 PM
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Originally Posted by WeDriveScions
^ It's proprietary as well, so no easy bosch replacements either.... definately an engineer smiling for that one.... making toyota some extra cash...
proprietary? Ouch....
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Old 12-19-2005 | 05:59 PM
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how do you know it was the first sensor?
p0420 Catalyst System Efficiency Below Threshold on Bank 1 (the rear sensor, or the sensor after the converter)
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Old 12-19-2005 | 06:12 PM
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If so, that's the sensor on the S-pipe. Warranty. If it was the A/F sensor, his car would be running like a$$ 'cause it would most likely be in safe mode.
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Old 12-19-2005 | 06:13 PM
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The O2 on the s-pipe is alot cheaper than the other one. Who installed your charger?
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Old 12-19-2005 | 07:04 PM
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Originally Posted by Munch
The O2 on the s-pipe is alot cheaper than the other one. Who installed your charger?

I installed it myself. Im 100% sure everything i did is correct. There was no detail left out nor a shortcut i took. Could it be fuel?
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Old 12-20-2005 | 03:01 PM
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Originally Posted by SuperWTC
Originally Posted by Munch
The O2 on the s-pipe is alot cheaper than the other one. Who installed your charger?

I installed it myself. Im 100% sure everything i did is correct. There was no detail left out nor a shortcut i took. Could it be fuel?
Did you do the SC reflash after you installed it?
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Old 12-20-2005 | 03:15 PM
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Originally Posted by dachmo
Originally Posted by SuperWTC
Originally Posted by Munch
The O2 on the s-pipe is alot cheaper than the other one. Who installed your charger?

I installed it myself. Im 100% sure everything i did is correct. There was no detail left out nor a shortcut i took. Could it be fuel?
Did you do the SC reflash after you installed it?
That wouldn't throw a CEL .
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