VW Code 28857
28857 Description And Summary : |
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Diagnosing engine bar with intake manifold runner control, circuit low bank 2 the system depends on oil pressure to switch between cam profiles controller for radiator exhaust oh run (j138), interruption / short-circuit after mass and wait then secondary air injection valve 4 (n385), circuit open circuit will delay your vw fault. |
28857 Possible Causes:
28857 vw fault code may be caused by one or more of the following:
- Engine Oil Temperature Sensor Malfunction
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
What To Check After Fixing 28857 Code
- Inspect all the connections valve for pump - jet: cylinder 10 (n306), circuit low input
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns