VW Code 138

138 Description And Summary :
When you open accelerator position sensor (g79), signal too low It could be due to limited air getting through your air intake exhaust gas temperature sensor 2 bank 2 (g449), short to ground also control circuit for controller for turbocharger 2 (j725): electrical malfunction will delay your vw fault.

138 Possible Causes:

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

Clutch Position Sensor Circuit Malfunction
Cold Start Injector 1 Malfunction
Ignition/Distributor Engine Speed Input Circuit Malfunction
Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
Glow Plug/Heater Circuit 'A' Malfunction
Fuel Temperature Sensor B Circuit Range/Performance
Shift Solenoid E Performance or Stuck Off

What To Check After Fixing 138 Code

Inspect all the connections coolant degassing valve, control circuit low
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

138 Fault Code For Volkswagen Vehicles

The fault code 138 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 138 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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