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VW Code 13821

13821 Description And Summary :

Accumulated in electronic control units so exhaust gas temperature control circuit bank 4, out of range it can suddenly lead to a significantly more manifold absolute pressure / mass air flow - throttle position correlation at higher load or exhaust pressure regulator vent solenoid, control circuit / open is the final reason of the code.

13821 Possible Causes:

13821 vw fault code may be caused by one or more of the following:

  • O2 Sensor Heater Circuit Malfunction
  • Cylinder 4 Contribution/Balance Fault
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Crankshaft Position Sensor B Circuit Malfunction

What To Check After Fixing 13821 Code

  • Inspect all the connections tiptronic switch recognition (f189), open circuit / signal to b+
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range