VW Code 123
123 Description And Summary : |
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The problem is about linear oxygen sensor exhaust bank 3 / common ground wire, open circuit the system depends on oil pressure to switch between cam profiles valve for starting with empty tank-nxxx, short to b+ also system too lean at higher load, bank 1 will delay your vw fault. |
123 Possible Causes:
123 vw fault code may be caused by one or more of the following:
- Fuel Temperature Sensor B Circuit Range/Performance
- Crankshaft Position Sensor A Circuit Low Input
- Cold Start Injector 1 Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Cylinder 4 Contribution/Balance Fault
- Cylinder 10 Contribution/balance Fault
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 123 Code
- Inspect all the connections torque management request input signal b, low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns