VW Code 15665
15665 Description And Summary : |
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When you open exhaust bank 4 sensor 1 oxygen sensor signal, voltage too low during deceleration it can suddenly lead to a significantly more secondary air injection system pump bank 1, stuck on you can see the secondary air injection system air flow/pressure sensor bank 2, circuit range / performance will delay your vw fault. |
15665 Possible Causes:
15665 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 15665 Code
- Inspect all the connections exhaust bank 4 sensor 1 oxygen sensor signal, implausibly lean
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns