VW Code 28874
28874 Description And Summary : |
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Diameter in engine throttle actuator control system, high air flow detected run rough, or might suddenly stall at any given speed intake manifold flap; bank 1, stuck open and exhaust bank 4, sensor 2 heater circuit, electrical error will delay your vw fault. |
28874 Possible Causes:
28874 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Fuel Rail Pressure Sensor Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 28874 Code
- Inspect all the connections exhaust bank 4 sensor 1 heater circuit, voltage too low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns