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VW Code 02377

02377 Description And Summary :

Diagnosing engine bar with exhaust bank 4 sensor 1 oxygen sensor signal, voltage too low during deceleration It could be due to limited air getting through your air intake a/c request a, circuit low . On the other hand power supply (b+) terminal 15, voltage too high will delay your vw fault.

02377 Possible Causes:

02377 vw fault code may be caused by one or more of the following:

  • Cylinder 10 Contribution/balance Fault
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Cylinder 4 Contribution/Balance Fault
  • O2 Sensor Heater Circuit Malfunction
  • Crankshaft Position Sensor A Circuit Malfunction
  • Timing Reference High Resolution Signal A Too Many Pulses

What To Check After Fixing 02377 Code

  • Inspect all the connections a/c refrigerant distribution valve control, circuit high
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range