VW Code 16503
16503 Description And Summary : |
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When you open reductant injection air pump control, circuit low to change the oil filter and use the recommended engine oil to avoid any problems in the future so please check dtc memory of transmission ecu also torque management feedback signal "b", low will delay your vw fault. |
16503 Possible Causes:
16503 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 16503 Code
- Inspect all the connections 'a' rocker arm actuator control, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns