Check Engine Light P0172 bank 1 system too rich?
#2
#3
#4
Same for me
Please let me know where to locate the PVC Hose. This is happeng at 840 RPM Here's the stats: This is my first post so if this is too much info, just let me know: Replaced both 02 sensors last year and MAF 3 years ago-
Freeze Frame Information:
1. DTC for which Freeze Frame was Stored - P0172.
2. Fuel System 1 Status - Closed Loop - Fault With At Least One Oxygen Sensor.
3. Fuel System 2 Status - Not Supported.
4. Calculated LOAD Value - 2.75 %.
5. Engine Coolant Temp - 210.20 °F.
6. Short Term Fuel Trim - Bank 1 - 6.25 %.
7. Long Term Fuel Trim - Bank 1 - -5.47 %.
8. Engine RPM - 840.00 Rpm.
9. Vehicle Speed Sensor - 0.00 Mph.
Freeze Frame Information:
1. DTC for which Freeze Frame was Stored - P0172.
2. Fuel System 1 Status - Closed Loop - Fault With At Least One Oxygen Sensor.
3. Fuel System 2 Status - Not Supported.
4. Calculated LOAD Value - 2.75 %.
5. Engine Coolant Temp - 210.20 °F.
6. Short Term Fuel Trim - Bank 1 - 6.25 %.
7. Long Term Fuel Trim - Bank 1 - -5.47 %.
8. Engine RPM - 840.00 Rpm.
9. Vehicle Speed Sensor - 0.00 Mph.
Last edited by Tdog; 11-02-2010 at 10:17 PM. Reason: too much info
#5
Model year and mileage could be useful to guess what is going on.
BTW, I am no mechanic nor car expert. I am just a new Volvo owner who is struggling to keep my car on the road. What I notice unusual from my experience is that your LTFT is negative while you get rich condition code.
If it was from vacuum leak, I would expect a lot higher LTFT, as ECU would trying to compensate un-metered air.
So, what I would rather guess is something like this
https://volvoforums.com/forum/showth...ighlight=p0172
Well, I have to admit that this still does not make clear sense because your problem is under idling not under boosting.
In addition, if I have to use silicone sealer, I would use sensor-safe one.
BTW, I am no mechanic nor car expert. I am just a new Volvo owner who is struggling to keep my car on the road. What I notice unusual from my experience is that your LTFT is negative while you get rich condition code.
If it was from vacuum leak, I would expect a lot higher LTFT, as ECU would trying to compensate un-metered air.
So, what I would rather guess is something like this
https://volvoforums.com/forum/showth...ighlight=p0172
Well, I have to admit that this still does not make clear sense because your problem is under idling not under boosting.
In addition, if I have to use silicone sealer, I would use sensor-safe one.
Last edited by t5ftw; 11-04-2010 at 12:03 PM.
#6
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