What Does P0494 Mean? The P0494 code relates to the engine cooling and air conditioner systems. In order ensure that the engine temperature remains at the right level, and that the air conditioner is operating correctly, the PCM gathers data from the circuitry in the cooling fan control system. If this data is more than 10% lower than the voltage specified by the manufacturer for the current driving conditions, then the PCM will store the P0494 code. engine code P0494P0494 fixobd P0494dtc P0494obd code P0494obd2 P0494P0494 car codediagnostic code P0494car code P0494check engine code P0494fehlercode P0494P0494 fiatcodigo P0494codigo falla P0494P0494 kody b??dówcodigo de falla P0494 What are the common causes of P0494 ? A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area. Some aftermarket accessories and performance modifications Fuel with a large percentage of sulfur will clog the DPF quickly How do you troubleshoot P0494 ? Deactivation of cylinders is achieved by releasing a synchroniser pin that normally interlocks the cam follower and rocker arms. P0494 code resolves the synchroniser pin is released using hydraulic pressure which is controlled by a dedicated solenoid. Searches related to P0494 - Fan Speed Low part 1267 j6 p0495 p0496 code
