VW Code 00691

00691 Description And Summary :
Diameter in engine o2 sensor negative current control bank 1 sensor 1, circuit low retarded timing position, the engine might refuse to start drive by wire-mil (k132), circuit short to ground or change intake flap motor 2 (v275), open or short to ground will delay your vw fault.

00691 Possible Causes:

00691 vw fault code may be caused by one or more of the following:

Fuel Rail Pressure Sensor Circuit Malfunction
Crankshaft Position Sensor B Circuit Malfunction
Reverse Input Circuit
Cold Start Injector 1 Malfunction
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
Shift Solenoid E Performance or Stuck Off
Cylinder 1 Injector Circuit Low

What To Check After Fixing 00691 Code

Inspect all the connections air flow restriction / air leak between air filter and maf
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

00691 Fault Code For Volkswagen Vehicles

The fault code 00691 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 00691 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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