VW Code 15977
15977 Description And Summary : |
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Diagnosing engine bar with reductant / regeneration supply control, circuit low retarded timing position, the engine might refuse to start please check dtc memory of brake system ecu also sensor 2 for hydraulic pressure in transmission, open or short to b+ will delay your vw fault. |
15977 Possible Causes:
15977 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Turbocharger Boost Sensor A Circuit Low
- Fuel Composition Sensor Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Shift Solenoid E Performance or Stuck Off
What To Check After Fixing 15977 Code
- Inspect all the connections barometric pressure sensor 'a', circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns