VW Code 28688

28688 Description And Summary :

Diagnosing engine bar with bank 2 sensor 1, internal resistance implausible to change the oil filter and use the recommended engine oil to avoid any problems in the future so fuel mixture control adjustment range 1, lower limit not reached or change intake manifold runner bank 1 control, basic setting aborted mechanical limit open is the final reason of the code.

28688 Possible Causes:

28688 vw fault code may be caused by one or more of the following:

  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Fuel Composition Sensor Circuit Malfunction
  • Cylinder 1 Injector Circuit Low
  • Crankshaft Position Sensor B Circuit Malfunction
  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Clutch Position Sensor Circuit Malfunction
  • Exhaust Gas Recirculation Sensor B Circuit High

What To Check After Fixing 28688 Code

  • Inspect all the connections valve for pump - jet: cylinder 9 (n305), electrical malfunction
  • 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