P0178 Engine Trouble Code
When you check engine light came on code P0178 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the P0178 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.
Theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $200-$300 depending on the car, but that's usually the cost of parts because the labor is relatively simple.
P0178 Code Meaning :
|OBD-II Diagnostic Powertrain (P) Trouble Code For Engine||Intake Valve Control Solenoid Circuit Low||Engine Oil Temperature Sensor Malfunction||Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)||Timing Reference High Resolution Signal A Too Many Pulses|
The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.
P0178 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP0178 OBD-II Trouble Code Fuel Composition Sensors are used to determine the amount of ethanol alcohol in the gasoline. Normally, a gasoline engine should not have more than 10% ethanol alcohol in the fuel for proper operation P0178 code.
Reason For P0178 CodeThe reason of P0178 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.
Parts or components should not be replaced with reference to only a P0178 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.