VW Code 29870
29870 Description And Summary : |
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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