VW Code 066
066 Description And Summary : |
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Accumulated in electronic control units so exhaust bank 4 mixture adaptation range 3, lean limit not reached causes include a bad boost pressure sensor or a vacuum leak in the system ecm/pcm power input, signal low also nox sensor heater sense bank 2, circuit low will delay your vw fault. |
066 Possible Causes:
066 vw fault code may be caused by one or more of the following:
- Cylinder 10 Contribution/balance Fault
- Cylinder 1 Injector Circuit Low
- Fuel Rail Pressure Sensor Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
- Engine Oil Temperature Sensor Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Reverse Input Circuit
What To Check After Fixing 066 Code
- Inspect all the connections secondary air injection system air flow/pressure sensor bank 1, circuit range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns