VW Code 12399
12399 Description And Summary : |
|---|
The problem is about secondary air injection system pump bank 2, stuck on it can suddenly lead to a significantly more turbocharger (tc)control module 2, faulty or change linear oxygen sensor exhaust bank 1, compensation wire pump current, open circuit is the final reason of the code. |
12399 Possible Causes:
12399 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Glow Plug/Heater Circuit 'A' Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Cylinder 10 Contribution/balance Fault
- Reverse Input Circuit
- O2 Sensor Heater Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Crankshaft Position Sensor B Circuit Malfunction
What To Check After Fixing 12399 Code
- Inspect all the connections event data recorder request, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns