![]() I've also modified the speeds and durations with no success in bringing the system to ready. I have followed drive cycle listed here (). I don't know if this has been the case all along, or a new issue. ![]() I have finally purchased a decent OBD scanner and have learned that after about 300 miles the EGR and only the EGR is 'not ready'. I have tried cleaning the upper and lower intake manifold, cleaning the EGR, cleaning the MAF (thinking discrepancy of expected air tripping excessive/insufficient triggers could be caused by an erroneous MAF) relocating the vacuum line and cursing like a sailor. Usually, after resetting the CEL it takes 500-1000 miles to come back. ![]() She throws both P0401 and P0402 at what appears to be random. I have a 2000 NB, 107,000 miles which has suffered from a recurring EGR issue since I bought it 2 years and 7,000 miles ago. Hello all! First time poster, long time lurker.
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