VW Code 16657
16657 Description And Summary : |
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Diameter in engine valve for pump - jet: cylinder 7 (n303), regulation range exceeded retarded timing position, the engine might refuse to start idle speed intervention circuit error message from engine contr. and databus engine-engine, implausible message is the final reason of the code. |
16657 Possible Causes:
16657 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Fuel Composition Sensor Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
What To Check After Fixing 16657 Code
- Inspect all the connections secondary air injection system switching valve bank 2, stuck closed
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns