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Old 10-10-2000, 06:49 PM
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Default OBD2 P0153 O2 Sensor - Where?

Hello All,
My '96 Blazer has the trouble code of P0153 - "O2 Sensor Circuit Slow Response (Bank 2 - Sensor 1)". It supposedly (Haynes) is after the Cat. I was wondering if anybody has some more information on this. Haynes Manual lists some ways to check it. Is this something I should immediately replace?
TIA, Roy

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Old 10-15-2000, 04:40 PM
Join Date: Jun 2000
Location: TN
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Blazernut is an unknown quantity at this point
Default Re: OBD2 P0153 O2 Sensor - Where?

It sounds like the heater went out in the sensor causing it not to heat up quick enough and setting a code. I would have the code cleared, and if it comes back immediately, change the sensor. Saw this a lot at the dealer. Hope this is helpful.
David G.

'91 S15 Jimmy 5.7L 4X4
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