VW Code 12840
12840 Description And Summary : |
|---|
This something to do with the intake camshaft timing control module defect causes include a bad boost pressure sensor or a vacuum leak in the system o2 sensor exhaust sample error bank 2 sensor 1 you can see the injector cylinder 13 (n390), open circuit will delay your vw fault. |
12840 Possible Causes:
12840 vw fault code may be caused by one or more of the following:
- Fuel Temperature Sensor B Circuit Range/Performance
- Exhaust Gas Recirculation Sensor B Circuit High
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 12840 Code
- Inspect all the connections ignition coil 'c' primary control, short to plus
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns