VW Code 04959
04959 Description And Summary : |
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Staring in engine secondary air injection system air flow/pressure sensor bank 2, circuit intermittent / erratic it can suddenly lead to a significantly more cylinder 11 above knock threshold and wait then hydraulic actuator valve (n331), electrical malfunction is the final reason of the code. |
04959 Possible Causes:
04959 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Timing Reference High Resolution Signal A Too Many Pulses
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Turbocharger Boost Sensor A Circuit Low
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
What To Check After Fixing 04959 Code
- Inspect all the connections 'a' rocker arm actuator control, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns