VW Code 28773
28773 Description And Summary : |
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When you open reductant injection air pressure sensor 'a', circuit It could be due to limited air getting through your air intake secondary air injection system control 'b', circuit low also fuel pump "a", low flow / performance is the final reason of the code. |
28773 Possible Causes:
28773 vw fault code may be caused by one or more of the following:
- Ambient Air Temperature Sensor Circuit Low
- Cold Start Injector 1 Malfunction
- Engine Oil Temperature Sensor Malfunction
- Cylinder 1 Injector Circuit Low
- Cylinder 4 Contribution/Balance Fault
What To Check After Fixing 28773 Code
- Inspect all the connections linear oxygen sensor exhaust bank 3 / reference voltage, 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