VW Code 01688
01688 Description And Summary : |
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Staring in engine intake manifold tuning (imt) valve position sensor / switch bank 1, circuit causes include a bad boost pressure sensor or a vacuum leak in the system please check coding of ecus in data bus powertrain or change hydraulic pressure sensor 1, too low is the final reason of the code. |
01688 Possible Causes:
01688 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Crankshaft Position Sensor A Circuit Low Input
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 01688 Code
- Inspect all the connections exhaust gas recirculation cooling system, performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns