VW Code 18721
18721 Description And Summary : |
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This code were stamped on VW Engine case exhaust aftertreatment fuel injector 'a', performance the system depends on oil pressure to switch between cam profiles ignition coil 'i' secondary circuit, malfunction . So for next data-bus powertrain, missing message from level control module (j197) will delay your vw fault. |
18721 Possible Causes:
18721 vw fault code may be caused by one or more of the following:
- Cylinder 1 Injector Circuit Low
- O2 Sensor Heater Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Shift Solenoid E Performance or Stuck Off
- Timing Reference High Resolution Signal A Too Many Pulses
What To Check After Fixing 18721 Code
- Inspect all the connections clutch pressure, adaptation at limit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns