VW Code 28688
28688 Description And Summary : |
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Diagnosing engine bar with evaporative emissions (evap) fuel vapour temperature sensor, circuit the system depends on oil pressure to switch between cam profiles potentiometer 2 for egr (g466), signal too low . On the other hand torque management request input signal a, low will delay your vw fault. |
28688 Possible Causes:
28688 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- O2 Sensor Heater Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Clutch Position Sensor Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 28688 Code
- Inspect all the connections drive by wire-mil (k132), circuit short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns