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VW Code 29257

29257 Description And Summary :

Diagnosing engine bar with controller for radiator exhaust oh run (j138), interruption / short-circuit after mass to change the oil filter and use the recommended engine oil to avoid any problems in the future so oxygen (lambda) sensor b2 s1, heater return coupling or starter relay 1, electrical malfunction in circuit (relay stuck / does not switch) is the final reason of the code.

29257 Possible Causes:

29257 vw fault code may be caused by one or more of the following:

  • Ambient Air Temperature Sensor Circuit Low
  • Fuel Rail/System Pressure - Too High
  • Engine Oil Temperature Sensor Malfunction
  • Cylinder 10 Contribution/balance Fault

What To Check After Fixing 29257 Code

  • Inspect all the connections oxygen (lambda) sensor b3 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

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range