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VW Code 158

158 Description And Summary :

Diameter in engine reductant injection air pressure sensor 'a', circuit It could be due to limited air getting through your air intake secondary air injection pump-d-relay (j705), circuit short to b+ . So for next fuel injector group 'c' supply voltage, circuit / open is the final reason of the code.

158 Possible Causes:

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

  • Reverse Input Circuit
  • Cold Start Injector 1 Malfunction
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Fuel Temperature Sensor B Circuit Range/Performance
  • Shift Solenoid E Performance or Stuck Off
  • Cylinder 10 Contribution/balance Fault
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)

What To Check After Fixing 158 Code

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

158 Fault Code For Volkswagen Vehicles

The fault code 158 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 158 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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