Sometimes car will clear faults itself after replacing faulty part and driving couple of kilometers twice, but not always. Also disconnecting battery will not clear fault codes on 2.7 CRD Jeep Grand Cherokee. It is possible to see engine fault codes with key on-off method, but you can not clear faults without correct OBD diagnostic tool.
Many of our customers have a huge problem with reading out Jeep Grand Cherokee 2.7 CRD fault codes.
