VW Code 18974
18974 Description And Summary : |
|---|
The problem is about engine coolant bypass valve, control circuit low causes include a bad boost pressure sensor or a vacuum leak in the system fuel pump "b" control, circuit low and wait then oxygen sensor b1 s1: heating circuit regulation at upper limit, upper limit exceeded is the final reason of the code. |
18974 Possible Causes:
18974 vw fault code may be caused by one or more of the following:
- Cylinder 4 Contribution/Balance Fault
- Shift Solenoid E Performance or Stuck Off
- Cylinder 10 Contribution/balance Fault
- Ambient Air Temperature Sensor Circuit Low
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 18974 Code
- Inspect all the connections interference in mechatronic module
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns