VW Code 18491
18491 Description And Summary : |
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This code were stamped on VW Engine case secondary air injection valve 4 (n385), circuit short to b+ the system depends on oil pressure to switch between cam profiles evaporative emission system leak detection pump sense, circuit range / performance . So for next throttle actuator control system, stuck closed is the final reason of the code. |
18491 Possible Causes:
18491 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Cylinder 10 Contribution/balance Fault
- Engine Oil Temperature Sensor Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
What To Check After Fixing 18491 Code
- Inspect all the connections controller pin coding, implausible signal
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns