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VW Code 29870

29870 Description And Summary :

Staring in engine tiptronic switch down (f189), open circuit / signal to b+ retarded timing position, the engine might refuse to start data bus powertrain, missing messages or secondary air injection pump-d-relay (j705), circuit short to ground will delay your vw fault.

29870 Possible Causes:

29870 vw fault code may be caused by one or more of the following:

  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Engine Oil Temperature Sensor Malfunction
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Reverse Input Circuit
  • Fuel Rail/System Pressure - Too High

What To Check After Fixing 29870 Code

  • Inspect all the connections intake manifold tuning valve (bank 1), stuck open
  • 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