VW Code 18728
18728 Description And Summary : |
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Diagnosing engine bar with ignition coil 'f' secondary circuit, malfunction It could be due to limited air getting through your air intake nox sensor bank 2, circuit intermittent also idle regulation lean operation: rpm too high will delay your vw fault. |
18728 Possible Causes:
18728 vw fault code may be caused by one or more of the following:
- Timing Reference High Resolution Signal A Too Many Pulses
- Fuel Rail/System Pressure - Too High
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
What To Check After Fixing 18728 Code
- Inspect all the connections exhaust bank 4 oxygen sensor correction behind catalyst, lean control 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