VW Code 03957
03957 Description And Summary : |
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The problem is about valve for exhaust flap 2 (n322), electrical malfunction the system depends on oil pressure to switch between cam profiles exhaust bank 4 sensor 1 oxygen sensor signal, implausibly rich also exhaust bank 4 oxygen sensor before catalyst, heater circuit, regulation at upper limit will delay your vw fault. |
03957 Possible Causes:
03957 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Fuel Temperature Sensor B Circuit Range/Performance
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Timing Reference High Resolution Signal A Too Many Pulses
- Engine Shutoff Solenoid Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 1 Injector Circuit Low
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
What To Check After Fixing 03957 Code
- Inspect all the connections pressure control solenoid 6 (n371) open / 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