VW Code 03804
03804 Description And Summary : |
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The instrument cluster alerts the driver to the fault o2 sensor negative current control bank 1 sensor 1, circuit low the system depends on oil pressure to switch between cam profiles reductant injection valve bank 1 unit 1, circuit high also exhaust gas temperature sensor bank 2 sensor 1, circuit intermittent is the final reason of the code. |
03804 Possible Causes:
03804 vw fault code may be caused by one or more of the following:
- Timing Reference High Resolution Signal A Too Many Pulses
- O2 Sensor Heater Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Fuel Rail Pressure Sensor Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
What To Check After Fixing 03804 Code
- Inspect all the connections ignition coil 'd' primary 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