VW Code 15646
15646 Description And Summary : |
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When you open exhaust bank 3/4 lambda probes after kat exchanges It could be due to limited air getting through your air intake fuel pump "b" control, circuit high . On the other hand reductant injection air pressure sensor 'a', circuit high is the final reason of the code. |
15646 Possible Causes:
15646 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
- Cylinder 4 Contribution/Balance Fault
- Cylinder 1 Injector Circuit Low
- Crankshaft Position Sensor A Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 15646 Code
- Inspect all the connections exhaust gas recirculation cooling valve control, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns