VW Code 28856
28856 Description And Summary : |
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This code were stamped on VW Engine case reversing light, circuit short to b+ to change the oil filter and use the recommended engine oil to avoid any problems in the future so secondary air injection valve 4 (n385), circuit short to b+ or change injection pump timing offset is the final reason of the code. |
28856 Possible Causes:
28856 vw fault code may be caused by one or more of the following:
- Timing Reference High Resolution Signal A Too Many Pulses
- Fuel Rail Pressure Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Shift Solenoid E Performance or Stuck Off
- Cylinder 4 Contribution/Balance Fault
What To Check After Fixing 28856 Code
- Inspect all the connections exhaust bank 3/4 lambda probes before kat exchanges
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns