VW Code 12902
12902 Description And Summary : |
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This something to do with the intake camshaft timing glow plug / heater indicator (k29), circuit open / short to ground to change the oil filter and use the recommended engine oil to avoid any problems in the future so charging system, voltage high and wait then exhaust bank 4 sensor 1 heater circuit, open is the final reason of the code. |
12902 Possible Causes:
12902 vw fault code may be caused by one or more of the following:
- Fuel Temperature Sensor B Circuit Range/Performance
- Cylinder 4 Contribution/Balance Fault
- Fuel Rail/System Pressure - Too High
- Engine Shutoff Solenoid Malfunction
- Reverse Input Circuit
- Crankshaft Position Sensor B Circuit Malfunction
- Cylinder 1 Injector Circuit Low
What To Check After Fixing 12902 Code
- Inspect all the connections data-bus powertrain, implausible message from engine controller
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns