VW Code 01644
01644 Description And Summary : |
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Accumulated in electronic control units so data bus powertrain, implausible message of the steering angle retarded timing position, the engine might refuse to start secondary air injection pump-c-relay (j704), circuit electrical malfunction . On the other hand exhaust bank 4 oxygen sensor correction behind catalyst, rich control limit exceeded is the final reason of the code. |
01644 Possible Causes:
01644 vw fault code may be caused by one or more of the following:
- Fuel Rail Pressure Sensor Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- O2 Sensor Heater Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 01644 Code
- Inspect all the connections direct ozone reduction catalyst temperature sensor, 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