DC/DC Converter Voltage Sensor A Circuit

Where it lives

For P0E31, the sensor sits on the circuit this code reports. The description of P0E31 reports a fault at the sensor.

Check these first

• An open or shorted DC/DC converter voltage sensor A circuit
• A failed voltage sensor A inside the DC/DC converter
• Corroded pins in the converter connector
• A broken wire between sensor A and the converter control board

What to do next

1. Inspect the voltage sensor A wiring for opens and shorts
2. Check the converter connector for corrosion
3. Measure the sensor A signal with the converter running
4. Compare the reading to a meter at the converter output
5. Service the DC/DC converter if the sensor circuit does not recover
6. Clear the code and retest

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