Two critical elements that need to be checked out at 100,000 miles are the EGR valve and the DPF. Hasten says to run a computerized flow test on the DPF filter tol show if the filter in the exhaust ...

All 2005-07 Acura RL sedans, in addition to 2008 models built from VIN JH4KB16..8C000001 through JH4KB16..8C004681, may turn on the check engine light and store DTC P0401 (insufficient EGR flow) in ...

Q: I took my car to my mechanic for the check engine light being on. He checked the codes and said it’s an “EGR fault” He said it would be a couple of days before he could get to it. He said I could ...