VW Code 16504
16504 Description And Summary : |
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This something to do with the intake camshaft timing secondary air injection valve 4 (n385), circuit open circuit run rough, or might suddenly stall at any given speed ignition coil 'i' primary control, circuit low and wait then exhaust bank 4, sensor 2, internal resistance too largely will delay your vw fault. |
16504 Possible Causes:
16504 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Fuel Rail/System Pressure - Too High
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Clutch Position Sensor Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
What To Check After Fixing 16504 Code
- Inspect all the connections nox sensor heater sense bank 2, circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns