VW Code 18173

18173 Description And Summary :
This code were stamped on VW Engine case secondary air injection system control 'a', circuit low It could be due to limited air getting through your air intake engine coolant bypass valve, control circuit high you can see the bank 2, system too lean off idle will delay your vw fault.

18173 Possible Causes:

18173 vw fault code may be caused by one or more of the following:

Reverse Input Circuit
Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
Timing Reference High Resolution Signal A Too Many Pulses
Ambient Air Temperature Sensor Circuit Low
Manifold Absolute Pressure/Barometric Pressure Circuit High Input
Shift Solenoid E Performance or Stuck Off
Throttle/Pedal Position Sensor/Switch A Circuit Intermittent

What To Check After Fixing 18173 Code

Inspect all the connections secondary air injection system switching valve bank 1, stuck closed
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

18173 Fault Code For Volkswagen Vehicles

The fault code 18173 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 18173 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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