VW Code 01201
01201 Description And Summary : |
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The problem is about exhaust bank 3 mixture adaptation range 3, lean limit not reached it can suddenly lead to a significantly more idle speed control throttle position, electrical malfunction or friction too high, intake cam adjustment bank 1 is the final reason of the code. |
01201 Possible Causes:
01201 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
- O2 Sensor Heater Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Engine Oil Temperature Sensor Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Fuel Rail/System Pressure - Too High
- Crankshaft Position Sensor A Circuit Malfunction
What To Check After Fixing 01201 Code
- Inspect all the connections oxygen sensor b1 s1: heating circuit regulation at upper limit, upper limit exceeded
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns