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2a2a and 2a0a codes with 2 different new o2 sensors

Everything on the Volvo S80. Sometimes called an "executive car", the S80 was Volvo's top-of-the-line passenger car. P2 platform.
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sepress1
Posts: 3
Joined: 2 July 2021
Year and Model: 2000 s80
Location: milwaukee, wi

2a2a and 2a0a codes with 2 different new o2 sensors

Post by sepress1 »

I have put 2 new Bosch sensors in Bank 1 S2 position with the same codes popping up. the signal on my scanner is very "Spikey" with a long duration in between spikes. most of the signal is a dead flatline at .45v. Am i looking for a broken wire at this point? Volvo does't have some backwards way of number cylinders or banks?
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