VW Code 12851
12851 Description And Summary : |
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The problem is about vacuum reservoir pressure sensor, circuit high mechanic will need to check all electrical connections in the camshaft sensor a/c refrigerant distribution valve control, circuit / open you can see the speed signal error message of the abs controller will delay your vw fault. |
12851 Possible Causes:
12851 vw fault code may be caused by one or more of the following:
- Cylinder 4 Contribution/Balance Fault
- Fuel Rail Pressure Sensor Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
What To Check After Fixing 12851 Code
- Inspect all the connections power supply voltage terminal 15, open circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns