After On-Board Diagnostic (OBD)

WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The vehicle wiring harness, PCM and non-transmission sensors can affect transmission operations. Repair these concerns first.

After the On-Board Diagnostic (OBD) procedures are completed, repair all DTCs.

Always repair all non-transmission-related DTCs first, then repair any transmission-related DTCs. Refer to the Diagnostic Trouble Code Chart for information on condition and symptoms. This chart will be helpful in referring to the correct service information and to aid in diagnosing internal transmission concerns and external non-transmission inputs. The pinpoint tests are used in diagnosing electrical concerns of the transmission. Make sure the vehicle wiring harness and the PCM are diagnosed as well. The INTRODUCTION - GASOLINE ENGINES article or INTRODUCTION - 6.4L DIESEL ENGINES article will aid in diagnosing non-transmission-related electronic components.