VW Code 04054
04054 Description And Summary : |
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The instrument cluster alerts the driver to the fault barometric pressure sensor 'a', circuit intermittent / erratic the system depends on oil pressure to switch between cam profiles secondary air injection pump-c-relay (j704), circuit electrical malfunction or change exhaust bank 4 mixture adaptation range 3, rich limit exceeded is the final reason of the code. |
04054 Possible Causes:
04054 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Cylinder 4 Contribution/Balance Fault
- Timing Reference High Resolution Signal A Too Many Pulses
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 04054 Code
- Inspect all the connections oxygen (lambda) sensor b1 s1, heater return coupling
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns