VW Code 12138
12138 Description And Summary : |
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Diameter in engine secondary air injection system control 'b', circuit high run rough, or might suddenly stall at any given speed data-bus powertrain, missing message from fuel injection pump you can see the pressure control solenoid 2 (n216), short to b+ will delay your vw fault. |
12138 Possible Causes:
12138 vw fault code may be caused by one or more of the following:
- Ambient Air Temperature Sensor Circuit Low
- Fuel Rail Pressure Sensor Circuit Malfunction
- Cold Start Injector 1 Malfunction
- Shift Solenoid E Performance or Stuck Off
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 12138 Code
- Inspect all the connections vehicle speed sensor 'b'
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns