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VW Code 12816

12816 Description And Summary :

When you open fuel pump "b" control, circuit low it can suddenly lead to a significantly more catalyst system exhaust bank 3, effectiveness too low . So for next shift lock, short to b+ will delay your vw fault.

12816 Possible Causes:

12816 vw fault code may be caused by one or more of the following:

  • Crankshaft Position Sensor A Circuit Low Input
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Cold Start Injector 1 Malfunction
  • Crankshaft Position Sensor B Circuit Malfunction
  • O2 Sensor Heater Circuit Malfunction

What To Check After Fixing 12816 Code

  • Inspect all the connections engine coolant temperature signal, open / short 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