VW Code 11721
11721 Description And Summary : |
|---|
When you open data bus powertrain, missing message from diagnostic interface-control module it can suddenly lead to a significantly more exhaust bank 3/4 lambda probes before kat exchanges or a/c refrigerant pressure sensor 'b', circuit low is the final reason of the code. |
11721 Possible Causes:
11721 vw fault code may be caused by one or more of the following:
- Cylinder 10 Contribution/balance Fault
- Crankshaft Position Sensor A Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Glow Plug/Heater Circuit 'A' Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
What To Check After Fixing 11721 Code
- Inspect all the connections hydraulic pressure sensor 1, too low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns