meerschm
Top Post Dawg
- Joined
- Apr 18, 2009
- Location
- Fairfax county VA
- TDI
- 2009 Jetta wagon DSG 08/08 205k buyback 1/8/18; replaced with 2017 Golf Wagon 4mo 1.8l CXBB
first time I read, I thought it was a typo. (gen one fix booklet)
"....OBD system will be modified and certain emission thresholds within the OBD system will be adjusted.These thresholds set new malfunction detection limits that may be above what inspection and maintenance regulators are familiar with and may reduce the effectiveness of the obd system in detecting malfunctions..."
I had guessed one item involved in the change was the new low pressure EGR, and the pressure check across it which causes the P0401 error when the DPF cracks. I had guessed the change could include more stringent checks for leaky DPFs
if this text is right, it may be the opposite, that the threshold will be opened up to not cause the P0401 error so fast when the DPF cracks.
"....OBD system will be modified and certain emission thresholds within the OBD system will be adjusted.These thresholds set new malfunction detection limits that may be above what inspection and maintenance regulators are familiar with and may reduce the effectiveness of the obd system in detecting malfunctions..."
I had guessed one item involved in the change was the new low pressure EGR, and the pressure check across it which causes the P0401 error when the DPF cracks. I had guessed the change could include more stringent checks for leaky DPFs
if this text is right, it may be the opposite, that the threshold will be opened up to not cause the P0401 error so fast when the DPF cracks.