VW Code 01815
01815 Description And Summary : |
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Diagnosing engine bar with reductant / regeneration supply control, circuit high It could be due to limited air getting through your air intake injector cylinder 15 (n392), open circuit you can see the valve for pump - jet: cylinder 12 (n308), electrical malfunction will delay your vw fault. |
01815 Possible Causes:
01815 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Cold Start Injector 1 Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
What To Check After Fixing 01815 Code
- Inspect all the connections o2 sensor signal bank 2 sensor 3, biased / stuck rich
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns