VW Code 12748
12748 Description And Summary : |
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The problem is about potentiometer 2 for egr (g466), signal too high the system depends on oil pressure to switch between cam profiles camshaft adjustment oil temperature sensor (g277), short to b+ you can see the injector control pressure, too high - engine off will delay your vw fault. |
12748 Possible Causes:
12748 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Cold Start Injector 1 Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Fuel Rail Pressure Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
What To Check After Fixing 12748 Code
- Inspect all the connections catalyst system exhaust bank 3, effectiveness too low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns