VW Code 28321
28321 Description And Summary : |
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Accumulated in electronic control units so diesel particulate filter pressure sensor 'b', circuit low retarded timing position, the engine might refuse to start please check dtc memory of transmission ecu or change post catalyst fuel trim system, low limit is the final reason of the code. |
28321 Possible Causes:
28321 vw fault code may be caused by one or more of the following:
- Turbocharger Boost Sensor A Circuit Low
- Fuel Temperature Sensor B Circuit Range/Performance
- Engine Oil Temperature Sensor Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cylinder 10 Contribution/balance Fault
- Timing Reference High Resolution Signal A Too Many Pulses
- Cylinder 4 Contribution/Balance Fault
What To Check After Fixing 28321 Code
- Inspect all the connections transmission mount valve 2 (n263), short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns