VW Code 18221
18221 Description And Summary : |
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Diameter in engine linear oxygen sensor exhaust bank 2, compensation wire pump current, open circuit it can suddenly lead to a significantly more data bus powertrain, missing messages from steering wheel electronics (j527) . On the other hand linear oxygen sensor exhaust bank 1, compensation wire pump current, open circuit will delay your vw fault. |
18221 Possible Causes:
18221 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Crankshaft Position Sensor B Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Cold Start Injector 1 Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
What To Check After Fixing 18221 Code
- Inspect all the connections glow plug / heater relay, circuit short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns