VW Code 15231
15231 Description And Summary : |
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Diagnosing engine bar with reductant injection valve bank 2 unit 1, circuit / open causes include a bad boost pressure sensor or a vacuum leak in the system o2 sensor signal bank 1 sensor 2, biased / stuck rich or change powertrain databus, implausible engine temperature message from inst. will delay your vw fault. |
15231 Possible Causes:
15231 vw fault code may be caused by one or more of the following:
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Fuel Temperature Sensor B Circuit Range/Performance
- Glow Plug/Heater Circuit 'A' Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 10 Contribution/balance Fault
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Timing Reference High Resolution Signal A Too Many Pulses
What To Check After Fixing 15231 Code
- Inspect all the connections relays for pump load air cooling (j536), short-circuit after pluses
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns