Fantastic! I’ll keep that in mind if and when my '13 starts acting up!
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I remember reading online that normal lambada reading is somewhere between 0.96 to 1.05 at idle. I could be a few hundredths of a decimal point off, but that’s the approximate acceptable range from what I remember.
From the screenshots I sent earlier you can tell that the bank two sensor one was idling at 0.712 which is way out of range. So that’s what made me believe that was the culprit, even though there were no O2 sensor codes for bank 2 whatsoever (current or pending)
Ultimately, I wouldn’t have thought to have checked lambada o2 readings on the scanner, if people here hadn’t mentioned it so I really appreciate all the help and hope this thread can help someone else so they don’t go throwing parts at their car!
Bad o2 sensor didn’t even come to mind since I just replaced all 4 barely 7 months ago when I did my long tube headers. Now I have to go through the fun process of waiting for the dealership to approve my defective return for the two sensors, which were extremely expensive for what they are…
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You said you fix it replacing B2S1 o2 sensor, then you said “return the two sensers”, what other sensor did you replace??
The downstream sensor that threw the P0141 for a bad heater
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Gotcha, thanks…
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Yes I replaced the bank 1 downstream first but it made no difference in fixing the problem on bank 2 or how the car ran. Although it did get rid of the check engine light for p0141
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It’s puzzling the only code was for the downstream sensor’s heater, when the upstream sensor on the same bank was showing a 19% LT fuel trim. You’d think the 19% LT fuel trim would be the more important of the two issues. An o2 sensor w/a failed heater will still work correctly after all, just takes a little longer to warm up. I wonder what the folks who design the p-code system were thinking?
They were thinking they could tell you when that part of the sensor failed so they did. The heater is there to bring the sensor up to operating temperature so that it reads accurately more quickly. Cold startup emissions are a significant portion of the total and recognizing a “slow” catalytic convertor is important to keep the car in compliance.