SOME VEHICLES MAY EXPERIENCE THE CHECK ENGINE LIGHT AND AUTOMATIC TRANSAXLE WARNING LIGHT ON WITH DTC P0842, P0847, P0872 AND/OR P0877 STORED IN THE TCM MEMORY.•P0842:00 - OIL PRESSURE SWITCH NO. 1 (OIL PRESSURE SWITCH B) STUCK ON•P0847:00 - OIL PRESSURE SWITCH NO. 2 (OIL PRESSURE SWITCH A) STUCK ON•P0872:00 - OIL PRESSURE SWITCH NO. 3 (OIL PRESSURE SWITCH A) STUCK ON•P0877:00 - OIL PRESSURE SWITCH NO. 4 (OIL PRESSURE SWITCH B) STUCK ONTHE DTC P0780 AND/OR P1738 MAY ALSO BE STORED TOGETHER.•P0780:00 - GEAR SHIFTING MALFUNCTION•P1738:00 - AUTOMATIC TRANSAXLE INTERNAL MALFUNCTION. NOTE: THIS SERVICE INFORMATION IS ALSO APPLICABLE IF DTC P0780:00 IS STOREED INDEPENDENTLY. THIS IS CAUSED BY THE OIL PRESSURE SWITCH A AND/OR B AT THE CONTROL VALVE BODY TEMPORARILY OR PERMANENTLY GETTING STUCK DUE TO CONTAMINATION ENTERING THE PASSAGE. TO CORRECT THE PROBLEM, SOME MASS PRODUCTION CHANGES HAVE BEEN IMPLEMENTED TO REDUCE CONTAMINATION AND IMPROVE THE DTC DIAGNOSTIC LOGIC.
