VW Code 04737
04737 Description And Summary : |
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When you open secondary air injection system pump bank 2, stuck on it can suddenly lead to a significantly more nox sensor heater sense bank 2, circuit intermittent also injector cylinder 16 (n393), open circuit will delay your vw fault. |
04737 Possible Causes:
04737 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Cold Start Injector 1 Malfunction
What To Check After Fixing 04737 Code
- Inspect all the connections linear oxygen sensor exhaust bank 2 / pump current, 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