P0978 Engine Fault Code

Check Solution For P0978 OBD Code :

P0978 engine code seems a kind of powertrain problem, we try to show one by one the meaning and the solution.
Brief explanation of the P0978 code and definition of P0978 is the bottom side.

P0978 Meaning :

p Powertrain Code
Problem is related engine, transmission and emissions systems.
0 SAE - Generic
9 Fuel And Air Metering (Injector Circuit Malfunctions Only)
7 Vehicle Speed Output Circuit
8 PCM Stack Overrun

SAE - Generic codes, which have a '0' as their second digit to indicate they are common to all makes and models of vehicles. These are the codes that are required for basic emissions fault diagnosis.

How To Fix P0978 ?

Deactivation of cylinders is achieved by releasing a synchroniser pin that normally interlocks the cam follower and rocker arms. P0978 code resolves the synchroniser pin is released using hydraulic pressure which is controlled by a dedicated solenoid.

P0978 Code Description:

The oxygen (02) sensors on your car measure the oxygen in the exhaust to determine how rich or lean the ratio of fuel and air are in the cylinders. Optimizing this mixture means better fuel economy and fewer exhaust emissions. When you see P0978 engine fault code on your engine code reader this description will help you.

P Codes List of all Powertrain codes.

Final Step: In the definitions listed below, there is a test drive recommended after you've completed any repairs to see if the condition is fixed. Before you take a test drive after a repair, always erase the P Code(s) first. This will turn the check engine light off and then you will know if the check engine light returns, you've got further diagnostics to complete.

BE CAREFUL !
This engine code information is presented for information purposes only. This is not intended as repair advice and we are not responsible for any actions you take on any vehicle.

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