Illuminated Malfunction Indicator Lamp (MIL) With Diagnostic Trouble Code (DTC) P0521 – 2018 Ford F-150
TECHNICAL SERVICE BULLETIN 3.5L – Illuminated Malfunction Indicator Lamp (MIL) With Diagnostic Trouble Code (DTC) P0521 – Built On Or Before 4-May-2018 18-2145 22 May 2018 Model: Ford 2018 F-150 Issue: Some 2018 F-150 vehicles equipped with a 3.5L engine and built on or before 4-May-2018 may exhibit an illuminated MIL with DTC P0521. … Read more