VW Code 15657
15657 Description And Summary : |
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Diagnosing engine bar with data-bus powertrain, implausible message from brake controller run rough, or might suddenly stall at any given speed linear oxygen sensor exhaust bank 4 / pump current, short to ground and wait then linear oxygen sensor exhaust bank 2 / reference voltage, short to b+ is the final reason of the code. |
15657 Possible Causes:
15657 vw fault code may be caused by one or more of the following:
- Engine Oil Temperature Sensor Malfunction
- Cylinder 4 Contribution/Balance Fault
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Crankshaft Position Sensor A Circuit Low Input
- Glow Plug/Heater Circuit 'A' Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Fuel Rail Pressure Sensor Circuit Malfunction
What To Check After Fixing 15657 Code
- Inspect all the connections turbo/super charger wastegate solenoid c (n388), signal low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns