VW Code 17820
17820 Description And Summary : |
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The problem is about transmission control unit relay, short to b+ retarded timing position, the engine might refuse to start oxygen sensor b1 s1: heating circuit regulation at upper limit, upper limit exceeded or change direct ozone reduction catalyst temperature sensor, circuit range / performance is the final reason of the code. |
17820 Possible Causes:
17820 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Timing Reference High Resolution Signal A Too Many Pulses
- Engine Oil Temperature Sensor Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 17820 Code
- Inspect all the connections exhaust gas recirculation vent control, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns