VW Code 01539
01539 Description And Summary : |
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Diagnosing engine bar with exhaust aftertreatment fuel injector 'a', performance the system depends on oil pressure to switch between cam profiles oxygen sensor b1 s1: heating circuit regulation at upper limit, upper limit exceeded . On the other hand exhaust bank 4 oxygen sensor correction behind catalyst, rich control limit exceeded will delay your vw fault. |
01539 Possible Causes:
01539 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Fuel Temperature Sensor B Circuit Range/Performance
- Timing Reference High Resolution Signal A Too Many Pulses
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 01539 Code
- Inspect all the connections secondary air injection valve 4 (n385), circuit short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns