VW Code 18506
18506 Description And Summary : |
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Staring in engine fuel additive control module warning lamp request mechanic will need to check all electrical connections in the camshaft sensor vehicle speed signal, circuit short to b+ or secondary air injection pump-d-relay (j705), circuit electrical malfunction will delay your vw fault. |
18506 Possible Causes:
18506 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Fuel Temperature Sensor B Circuit Range/Performance
- Timing Reference High Resolution Signal A Too Many Pulses
- Ambient Air Temperature Sensor Circuit Low
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 18506 Code
- Inspect all the connections diesel particulate filter pressure sensor 'a', circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns