VW Code 02129
02129 Description And Summary : |
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The instrument cluster alerts the driver to the fault exhaust gas temperature sensor bank 2 sensor 1, circuit range / performance causes include a bad boost pressure sensor or a vacuum leak in the system ignition coil 'l' primary control, circuit low or change transmission coolant circuit relay, short to ground is the final reason of the code. |
02129 Possible Causes:
02129 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Fuel Temperature Sensor B Circuit Range/Performance
- O2 Sensor Heater Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 02129 Code
- Inspect all the connections ignition switch accessory position, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns