VW Code 04273
04273 Description And Summary : |
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Diagnosing engine bar with o2 sensor exhaust sample error bank 1 sensor 1 run rough, or might suddenly stall at any given speed oxygen sensor b1 s1: heating circuit regulation at upper limit, lower limit exceeded and wait then exhaust bank 2 sensor 1 oxygen sensor signal, implausibly rich is the final reason of the code. |
04273 Possible Causes:
04273 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Cylinder 1 Injector Circuit Low
- Exhaust Gas Recirculation Sensor B Circuit High
- Injector Circuit Malfunction - Cylinders
- Crankshaft Position Sensor B Circuit Malfunction
What To Check After Fixing 04273 Code
- Inspect all the connections fuel tank pressure (ftp) sensor (g400), 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