Tag Archives: DTC

P1450 is a manufacturer-specific trouble code. In the case of Ford (Lincoln, Mercury, Ford, and some Mazda’s), it indicates that the pressure in the fuel tank is not bleeding up to the engine. Far and away, the most common cause of Ford P1450 is a bad purge valve (there’s a …

P1289 is a manufacturer-specific diagnostic trouble code. In the case of Ford-built vehicles, it indicates that the cylinder head temperature sensor returned a value to the powertrain control module (PCM) that was greater than the signal should be during a self-test. P1289 Ford Definition: Cylinder Head Temp Sensor – Signal …