VW Code 12671
12671 Description And Summary : |
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Diagnosing engine bar with oxygen (lambda) sensor b4 s1, heater return coupling it can suddenly lead to a significantly more exhaust bank 4 sensor 1 heater circuit, internal resistance too large . So for next power supply (b+) terminal 15, open circuit will delay your vw fault. |
12671 Possible Causes:
12671 vw fault code may be caused by one or more of the following:
- Ambient Air Temperature Sensor Circuit Low
- Crankshaft Position Sensor A Circuit Low Input
- Cylinder 10 Contribution/balance Fault
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
What To Check After Fixing 12671 Code
- Inspect all the connections exhaust gas temperature sensor, bank 2 sensor 5, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns