Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450 - Diagnostic Strategy

Diagnosis and Testing

Refer to Wiring Diagrams Section 307-01, for schematic and connector information.

General Equipment

diagnostic equipment

Inspection and Verification

1. Verify the customer concern.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection

Mechanical	Electrical
Fluid level too high/low Poor condition of fluid Fluid leak Damaged shift mechanism/linkages Damaged automatic transmission/ transaxle casing	Fuse(s) Relay(s) Wiring harness Electrical connector(s) Selector lever module Transmission control module (TCM)

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step

4. If the cause is not visually evident, verify the symptom and refer to the Ford diagnostic equipment to diagnose the system.

Diagnostic Trouble Code (DTC) Chart

NOTE: The following table should be used for guidance only. The Ford diagnostic equipment must be used to diagnose concerns with the automatic transmission.

DTC	Description	Action
P0603	EEPROM fault	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P060A	Internal Control Module, Monitoring Processor Performance	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P073E	gear R engagement blocking (after internal handling)	INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P073F	gear 1 engagement blocking (after internal handling)	INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P074A	gear 2 engagement blocking (after internal handling)	INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P074B	gear 3 engagement blocking (after internal handling)	INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P074C	gear 4 engagement blocking (after internal handling)	INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P074D	gear 5 engagement blocking (after internal handling)	INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P0791	In shaft 1 speed sensor defect, current out of range	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0792	Input shaft speed 1 defect	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0847	Clutch 2 Pressure sensor voltage below normal operation voltage	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0711	Hydraulic, hybrid temperature sensor plausibility failure	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0715	Damper speed sensor defect	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0766	CSMS1 / CSM1 sticks low / low oil level	CHECK for obvious oil leaks. CHECK the oil level and Test Drive. If symptoms persist INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P0771	CSMS2 / CSM2 sticks low / low oil level	CHECK for obvious oil leaks. CHECK the oil level and Test Drive. If symptoms persist INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P0796	Clutch 1 Plausibility Failure pressure too low	CHECK for obvious oil leaks. CHECK the oil level and Test Drive. If symptoms persist INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P2714	Clutch 2 Plausibility Failure pressure too low	CHECK for obvious oil leaks. CHECK the oil level and Test Drive. If symptoms persist INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P2715	Clutch 2 Plausibility Failure pressure too high	CHECK for obvious oil leaks. CHECK the oil level and Test Drive. If symptoms persist INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P0841	Clutch 1 Torque Plausibility Failure	INSTALL a new Clutch, if symptoms persist INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0846	Clutch 2 Torque Plausibility Failure	INSTALL a new Clutch, if symptoms persist INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P2746	transmission path 2 speed plausibility error	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P1905	EOL Mode active	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0949	Teaching not completed	Check for the latest TCM software level, Run Teach in routine using the Ford diagnostic equipment.
P171A	shift fork 1 requested but movement on shift fork 2	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation). If symptoms persist INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P171C	shift fork 2 requested but movement on shift fork 1	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation). If symptoms persist INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P171D	shift fork 2 requested but movement on shift fork 4	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation). If symptoms persist INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P171F	shift fork 3 requested but movement on shift fork 4	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation). If symptoms persist INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P172C	shift fork ½ movement in opposite direction (to left cylinder)	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation). If symptoms persist INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P0581	SHSS1 current driver error: Short to Battery	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0798	CSPS1 valve current driver error: overcurrent	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P2716/9	CSPS2 valve current driver error: overcurrent	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P2720	CSPS2 valve current error: Short to Ground	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0964	CCFS current driver error Open load	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0979	SHCMS current driver error: Short to Ground	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0753	SHSS1 current driver error: Open load	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0778	CCFS current driver error: overcurrent	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0657	Common high side driver 1 not functional	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P092C	Shift lock output short to Ground / Open Load	CHECK wiring for continuity, if symptoms persist INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P081B	Start lock output error: Short to Battery	CHECK wiring for short, if symptoms persist INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P283B	shift fork position 3 position range error (in counts)	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P283D	shift fork position sensor 3 low output voltage failure	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P2840	shift fork position 4 position range error (in counts)	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P2842	shift fork position sensor 4 low output voltage failure	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P2846	shift fork position sensor 2 neutral plausibility error	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P2849	shift fork 1 blocked completely and no unexpected movement on other shift fork	INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P284A	shift fork 2 blocked completely and no unexpected movement on other shift fork	INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P284B	shift fork 3 blocked completely and no unexpected movement on other shift fork	INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P284C	shift fork 4 blocked completely and no unexpected movement on other shift fork	INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P284D	shift fork 1 movement but not requested	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P284F	shift fork 3 movement but not requested	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P2850	shift fork 4 movement but not requested	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation).
P0733	shift fork 2 jump out from forward towards the engine (left side)	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation). If symptoms persist INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).
P0734	shift fork 3 jump out from rearward towards the engine (right side)	INSTALL a new TCM REFER to: Transmission Control Module (TCM) and Main Control Valve Body (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450, Removal and Installation). If symptoms persist INSTALL a new transmission REFER to: (307-01A Automatic Transmission - 6-Speed PowerShift Transmission - MPS6/6DCT450) Transmission (Removal), Transmission (Installation).