VW Code 12890
12890 Description And Summary : |
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The problem is about secondary air injection system switching valve bank 2, stuck closed the system depends on oil pressure to switch between cam profiles bank 1, system too rich off idle or change throttle/fuel inhibit, circuit high will delay your vw fault. |
12890 Possible Causes:
12890 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Reverse Input Circuit
- Turbocharger Boost Sensor A Circuit Low
- Shift Solenoid E Performance or Stuck Off
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
What To Check After Fixing 12890 Code
- Inspect all the connections 'a' rocker arm actuator system, performance or stuck off
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns