VW Code 16438

16438 Description And Summary :
The instrument cluster alerts the driver to the fault secondary air injection system pump bank 1, stuck off It could be due to limited air getting through your air intake accelerator position sensor 2 (g185), signal too high you can see the exhaust bank 3 sensor 1 oxygen sensor signal, implausibly lean is the final reason of the code.

16438 Possible Causes:

16438 vw fault code may be caused by one or more of the following:

Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
O2 Sensor Heater Circuit Malfunction
Cylinder 1 Injector Circuit Low
Exhaust Gas Recirculation Sensor B Circuit High
Ignition Coil A Primary/Secondary Circuit Malfunction
Crankshaft Position Sensor A Circuit Low Input

What To Check After Fixing 16438 Code

Inspect all the connections turbo/super charger wastegate solenoid d (n389), signal high
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

16438 Fault Code For Volkswagen Vehicles

The fault code 16438 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 16438 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

VW 001 - 196 Code Range

Page 1

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range

Page 24