VW Code 02121
02121 Description And Summary : |
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This something to do with the intake camshaft timing o2 sensor pumping current trim bank 1 sensor 1, circuit low to change the oil filter and use the recommended engine oil to avoid any problems in the future so injector data, incompatible . On the other hand diesel particulate filter differential pressure too high bank 2 will delay your vw fault. |
02121 Possible Causes:
02121 vw fault code may be caused by one or more of the following:
- Timing Reference High Resolution Signal A Too Many Pulses
- Clutch Position Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Cylinder 10 Contribution/balance Fault
- Engine Shutoff Solenoid Malfunction
- Shift Solenoid E Performance or Stuck Off
- Cold Start Injector 1 Malfunction
What To Check After Fixing 02121 Code
- Inspect all the connections powertrain databus, implausible engine temperature message from inst.
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns