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Example: P0120
P3979 Volkswagen Polo 4 engine code seems a kind of powertrain problem, we try to show one by one the meaning and the solution.
Brief explanation of the P3979 Volkswagen Polo 4 code and definition of P3979 Volkswagen Polo 4 is the bottom side.
| p |
Powertrain Code Problem is related engine, transmission and emissions systems. |
| 3 | SAE - Generic |
| 9 | Fuel And Air Metering (Injector Circuit Malfunctions Only) |
| 7 | Vehicle Speed Output Circuit |
| 9 | Kick-Down Switch Failed Short |
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.
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How To Fix P3979 Volkswagen Polo 4 ?
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. |
Deactivation of cylinders is achieved by releasing a synchroniser pin that normally interlocks the cam follower and rocker arms. P3979 code resolves the synchroniser pin is released using hydraulic pressure which is controlled by a dedicated solenoid. When you see P3979 Volkswagen Polo 4 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.
