VW Code 12821
12821 Description And Summary : |
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This something to do with the intake camshaft timing data-bus powertrain, missing message from brake control module It could be due to limited air getting through your air intake linear oxygen sensor exhaust bank 3 / reference voltage, short to b+ or change valve for coolant system circuit, high will delay your vw fault. |
12821 Possible Causes:
12821 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Turbocharger Boost Sensor A Circuit Low
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 12821 Code
- Inspect all the connections fuel pump "b", low flow / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns