This bulletin applies to 2014 Dodge Challenger, Charger and Chrysler 300 vehicles equipped with a 5.7L engine and built on or before Sept.4, 2013. A MIL may be on, with DTC P1621 (O2 sensor reference voltage circuit low) or P1622 (O2 sensor reference voltage circuit high).
Owners of a 2014 Jeep Compass or Patriot built on or after Feb. 4, 2012, and equipped with DRL (day time running headlamps) may comment that the DRL will not illuminate, and the technician may find no DTCs set.
This bulletin applies to 2013 Dodge Dart vehicles equipped with a 1.4L engine and the C635 manual transmission. The customer may indicate that they feel an A/C engagement bump during acceleration when ambient temperature is above 90 degrees Fahrenheit, along with a lack of power.
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