VW Code 12851
12851 Description And Summary : |
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The instrument cluster alerts the driver to the fault engine torque reduction, short to b+ causes include a bad boost pressure sensor or a vacuum leak in the system engine coolant level low . On the other hand intake air heater "a", system performance will delay your vw fault. |
12851 Possible Causes:
12851 vw fault code may be caused by one or more of the following:
- Fuel Temperature Sensor B Circuit Range/Performance
- Fuel Rail/System Pressure - Too High
- Reverse Input Circuit
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 12851 Code
- Inspect all the connections mil request signal active (check for tcm errors too!)
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns