VW Code 11638

11638 Description And Summary :
When you open linear oxygen sensor exhaust bank 2 / pump current, open circuit causes include a bad boost pressure sensor or a vacuum leak in the system fuel tank pressure (ftp) sensor (g400), short to b+ and powertrain data bus, missing message from instrument cluster will delay your vw fault.

11638 Possible Causes:

11638 vw fault code may be caused by one or more of the following:

Ambient Air Temperature Sensor Circuit Low
Timing Reference High Resolution Signal A Too Many Pulses
Turbocharger Boost Sensor A Circuit Low
Fuel Rail/System Pressure - Too High
Ignition Coil A Primary/Secondary Circuit Malfunction
Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)

What To Check After Fixing 11638 Code

Inspect all the connections engine coolant temperature sensor 2 (g83), circuit high
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

11638 Fault Code For Volkswagen Vehicles

The fault code 11638 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 11638 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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