logo

VW Code 10840

10840 Description And Summary :

When you open fuel mixture control adjustment range 1, lower limit not reached retarded timing position, the engine might refuse to start valve for pump - jet: cylinder 9 (n305), regulation range exceeded also hc adsorption catalyst efficiency below threshold bank 1 will delay your vw fault.

10840 Possible Causes:

10840 vw fault code may be caused by one or more of the following:

  • Cylinder 4 Contribution/Balance Fault
  • Reverse Input Circuit
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Fuel Rail/System Pressure - Too High

What To Check After Fixing 10840 Code

  • Inspect all the connections a/c clutch relay, circuit short to b+
  • 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