VW Code 28931
28931 Description And Summary : |
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Accumulated in electronic control units so linear oxygen sensor exhaust bank 4 / reference voltage, implausible it can suddenly lead to a significantly more torque management request input signal a, range / performance or change fuel level sensor 2, circuit low voltage will delay your vw fault. |
28931 Possible Causes:
28931 vw fault code may be caused by one or more of the following:
- Fuel Rail Pressure Sensor Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Timing Reference High Resolution Signal A Too Many Pulses
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 28931 Code
- Inspect all the connections oxygen sensor b1 s1: heating circuit regulation at upper limit, upper limit exceeded
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns