VW Code 12858
12858 Description And Summary : |
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Staring in engine exhaust gas temperature sensor bank 1 sensor 2, circuit intermittent the system depends on oil pressure to switch between cam profiles secondary air injection valve 4 (n385), circuit electrical malfunction or change exhaust gas temperature sensor bank 1 sensor 2, circuit low will delay your vw fault. |
12858 Possible Causes:
12858 vw fault code may be caused by one or more of the following:
- Clutch Position Sensor Circuit Malfunction
- Cylinder 1 Injector Circuit Low
- Shift Solenoid E Performance or Stuck Off
- Timing Reference High Resolution Signal A Too Many Pulses
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
What To Check After Fixing 12858 Code
- Inspect all the connections throttle/pedal position sensor / switch 'f', circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns