VW Code 28138

28138 Description And Summary :
Staring in engine valve for pump - jet, cylinder 4 (n243), electrical malfunction the system depends on oil pressure to switch between cam profiles reversing light, circuit open and cannot activate controller reply function due to another error with equal priority will delay your vw fault.

28138 Possible Causes:

28138 vw fault code may be caused by one or more of the following:

Manifold Absolute Pressure/Barometric Pressure Circuit High Input
O2 Sensor Heater Circuit Malfunction
Timing Reference High Resolution Signal A Too Many Pulses
Fuel Rail/System Pressure - Too High
Fuel Temperature Sensor B Circuit Range/Performance
Ambient Air Temperature Sensor Circuit Low

What To Check After Fixing 28138 Code

Inspect all the connections fuel pump "b" control, circuit / open
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

28138 Fault Code For Volkswagen Vehicles

The fault code 28138 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 28138 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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