Some 2008-2010 Ford F-Super Duty vehicles equipped with a 6.4L diesel engine may exhibit a lack of power, MIL on, with DTCs P20E2, P20E3, P20E4, P2080, P2084, P242A, P242B, P0544 or P2031. The issue may involve the EGT (exhaust gas temperature) sensor.
Monitor all continuous memory diagnostic trouble codes using the IDS scan tool or equivalent. If any of the previously listed trouble codes are present, replace the faulty EGT sensor based on the DTC present using the EGT replacement procedure as follows:
- With the ignition switch in the OFF position, disconnect the faulty EGT sensor connector.