VW Code 05209
05209 Description And Summary : |
|---|
Diagnosing engine bar with exhaust bank 1 sensor 1 oxygen sensor signal, voltage too low during deceleration It could be due to limited air getting through your air intake fuel injector group 'c' supply voltage, circuit low or change charge pressure fan relay (j712), open is the final reason of the code. |
05209 Possible Causes:
05209 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Fuel Rail Pressure Sensor Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Cold Start Injector 1 Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Crankshaft Position Sensor A Circuit Low Input
- Cylinder 4 Contribution/Balance Fault
What To Check After Fixing 05209 Code
- Inspect all the connections relays for coolant additive pump (j496), 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