VW Code 17021

17021 Description And Summary :
Staring in engine mil call-up circuit / transmission control module, short to ground it can suddenly lead to a significantly more fuel injector group 'd' supply voltage, circuit high and wait then bank 2, system too rich at idle is the final reason of the code.

17021 Possible Causes:

17021 vw fault code may be caused by one or more of the following:

Engine Oil Temperature Sensor Malfunction
Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
Ignition/Distributor Engine Speed Input Circuit Malfunction
Timing Reference High Resolution Signal A Too Many Pulses
Fuel Rail Pressure Sensor Circuit Malfunction

What To Check After Fixing 17021 Code

Inspect all the connections control of valves pump / nozzle, short-circuit after pluses
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

17021 Fault Code For Volkswagen Vehicles

The fault code 17021 is associated with Volkswagen (VW) vehicles and indicates a specific issue detected by the onboard diagnostics (OBD) system. Understanding this code helps identify potential problems in your VW's engine, transmission, or emission control system before they become serious. This page provides a detailed explanation of the 17021 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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