VW Code 07021

07021 Description And Summary :
The instrument cluster alerts the driver to the fault particulate trap bank 1, efficiency below threshold run rough, or might suddenly stall at any given speed fuel injector group 'd' supply voltage, circuit / open or change turbocharger boost control position sensor 'b', circuit high is the final reason of the code.

07021 Possible Causes:

07021 vw fault code may be caused by one or more of the following:

Timing Reference High Resolution Signal A Too Many Pulses
Ambient Air Temperature Sensor Circuit Low
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
Manifold Absolute Pressure/Barometric Pressure Circuit High Input
Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
Ignition Coil A Primary/Secondary Circuit Malfunction

What To Check After Fixing 07021 Code

Inspect all the connections exhaust bank 1 sensor 1 individual cylinder control, sensor dynamic 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

07021 Fault Code For Volkswagen Vehicles

The fault code 07021 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 07021 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

VW 001 - 196 Code Range

Page 1

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range

Page 24