P1247
WarningSensor Power Supply High Input
Is it safe to drive?
🟡 Check the vehicle display for drive or charge restrictions and schedule service promptly.
What does P1247 mean?
P-code P1247 means "Sensor Power Supply High Input". It is a manufacturer-specific diagnostic trouble code (DTC) in the powertrain. The sensor or circuit is reading a voltage or signal value above its expected maximum range for the sensor power supply high input. This warning should be addressed within the next few days to avoid further damage. This code applies to OBD-II compliant electric and hybrid vehicles.
Possible Causes
- Sensor reference voltage (V_Ref) line shorted to a higher voltage
- Faulty sensor outputting a signal above its calibrated range
- Corroded connector causing erratic high-voltage readings
- Control module failure misinterpreting the sensor signal
Recommended Actions
- 1 Avoid aggressive driving and schedule a diagnostic appointment within the next 1–3 days
- 2 Scan for all DTCs with an OBD-II scanner — note any related codes stored alongside P1247
- 3 Check the sensor reference voltage (should be ~5V) and signal output with a multimeter
- 4 Clean or replace the sensor connector — corrosion is a common cause of out-of-range voltage readings
- 5 Clear the DTC, road-test the vehicle, and re-scan to confirm whether the fault returns
- 6 If the fault persists after inspection and clearing, consult an EV-certified technician for component replacement
Related Powertrain fault codes
P0100 Mass or Volume Air Flow Circuit Malfunction P0102 Mass or Volume Air Flow Circuit Low Input P0103 Mass or Volume Air Flow Circuit High Input P0105 Manifold Absolute Pressure/Barometric Pressure Circuit P0107 Manifold Absolute Pressure/Barometric Pressure Circuit P0108 Manifold Absolute Pressure/Barometric Pressure Circuit P0110 IAT Circuit Malfunction P0117 Engine Coolant Temperature Circuit Low Input