Bad News: I ordered a 30650090 downstream O2 sensor from Tasca and got this reply:

"Part #30650090 is currently on national backorder with the automotive manufacturer and has no estimated date of resupply. We do not currently have this item in stock at our warehouse and are unable to acquire it at ...

I am slightly worried that the failed heater in the downstream sensor will cause it to report incorrect data due to the sensor running at lower than normal temperature. I have read that some ECUs use the downstream O2 sensor data to optimize the cat performance, perhaps by tweaking the Air/Fuel ...

I was planning to drive my 2006 V70NA on a 1000 mile trip starting later this week. Over the weekend the check engine light came on and the cause was pending fault code P0036 followed by active fault code P0037. Both of these codes indicate a problem with the heating element in the downstream O2 ...

The problem is fixed ! Replacing the front oxygen sensor dropped the long term fuel trim by a few percent but it was still too high under heavy loads. Replacing the MAF sensor dropped the max long term fuel trim to the 5% range. The ECM-250A / P0171 fuel trim fault code (long term fuel trim high ...

If the O2 and MAF sensors are accurate, it does look like the injectors are not producing the expected flow rates at medium to high engine loads. The long term fuel trim could be high because it is compensating for deficient injector flow.

Do the catalytic converter temperatures reported by ODB2 ...

Thanks for explaining the lean O2 sensor data when off-throttle.

I assume the engine coolant temperature sensor is working because the ODB parameter for coolant temperature reports correct values during warmup and operation. Also that sensor was replaced last year as part of a new thermostat ...

Apologies for the long post. I wanted to provide enough data to help the experts on this forum diagnose the problem.

My 2006 V70 NA 2.4L M56 has 114,000 miles and in February started reporting a P0171 code (System Too Lean). The engine still had normal power, it idled and ran smoothly. Vida ...

My 2006 V70 NA has 116,000 miles. The intake manifold is off because I am replacing the PCV breather box and hoses. This is a good opportunity to check the alternator because it would be easy to remove/replace if necessary. The alternator pulley and bearings seem fine. I removed the alternator back ...

I never followed up with the resolution of my ride harshness problem. I made these changes to the front and rear suspension:

1. Bilstein B4 front struts and rear shocks replaced with Sachs OE from FCP Euro.
2. Installed new Febi 18481 strut mount bearings even though the existing Febi 18481s only ...

So for the 2007 S60 with Bi-Xenon HL, even after I spent hours polishing the lens, the output at night is about 50-60% of what a normal
car should be. My theory is that, even from factory, the 2007 S60 Bi-Xenon light output (mine uses D1S bulb) is below normal.

Then I found out if you flip to ...