Carry out 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: If equipped, turn the Power Take-Off (PTO) unit off to make sure test results are correct. For a description of PTO operation, refer to Transmission Electronic Control System . On-Board Diagnostic (OBD) is not accessible when the PTO is in operation.

After a road test, with the engine and transmission at normal operating temperature and before disconnecting any connectors, using the scan tool perform the Self Test procedure. Refer to the INTRODUCTION - GASOLINE ENGINES article or INTRODUCTION - 6.4L DIESEL ENGINES article for diagnosis and testing of the PCM.