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P0478 Engine Trouble Code

Meaning of P0478 engine trouble code is a kind of powertrain trouble code and P0478 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,140 and you can't do it yourself unless you're an experienced mechanic.

P0478 Fault Symptoms :

Check engine light comes on
Engine stalling or misfiring
Engine performance issues
Car not starting

If one of these reasons for P0478 code is occuring now you should check P0478 repair processes.
Now don't ask yourself; What should you do with P0478 code ?
The solution is here :

P0478 Possible Solution:

The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time.If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver.

P0478 Code Meaning :

P	0	4	7	8
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine	Intake Valve Control Solenoid Circuit Low	O2 Sensor Heater Circuit Malfunction	Cylinder 10 Contribution/balance Fault	Clutch Position Sensor Circuit Malfunction

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.

P0478 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0478 OBD-II Trouble Code Exhaust Back Pressure Regulator - Is a variable position valve that controls exhaust back pressure during cold ambient temperatures to increase cab heat and decrease the amount of time needed to defro P0478 code.

Main reason For P0478 Code

The reason of P0478 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.

P0478 DTCs may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.

	Example: 0140