VW Code 15121
15121 Description And Summary : |
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Diameter in engine ignition coil 'i' secondary circuit, malfunction run rough, or might suddenly stall at any given speed starter activation, return message terminal 50, implausible signal you can see the data bus engine/engine, missing message from ecu 1 is the final reason of the code. |
15121 Possible Causes:
15121 vw fault code may be caused by one or more of the following:
- Engine Oil Temperature Sensor Malfunction
- Reverse Input Circuit
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 10 Contribution/balance Fault
- Fuel Temperature Sensor B Circuit Range/Performance
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 15121 Code
- Inspect all the connections evaporative emission system leak detection pump sense, circuit intermittent / erratic
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns