VW Code 12637

12637 Description And Summary :
When you open ignition switch run position, circuit high retarded timing position, the engine might refuse to start intake manifold runner control, upper stop not reached also exhaust bank 3 mixture adaptation range 3, rich limit exceeded will delay your vw fault.

12637 Possible Causes:

12637 vw fault code may be caused by one or more of the following:

Exhaust Gas Recirculation Sensor B Circuit High
Cylinder 4 Contribution/Balance Fault
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
Manifold Absolute Pressure/Barometric Pressure Circuit High Input
Fuel Rail Pressure Sensor Circuit Malfunction

What To Check After Fixing 12637 Code

Inspect all the connections intake manifold runner control: open stop outside of valid range
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

12637 Fault Code For Volkswagen Vehicles

The fault code 12637 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 12637 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