P0031
Moderate
Powertrain
HO2S Heater Circuit Low (Bank 1 Sensor 1)
Common Causes
Short to ground in heater circuit
Failed O2 sensor
Damaged wiring harness
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Quick Info
| Code | P0031 |
| System | Powertrain |
| Severity | Moderate |
Disclaimer
This information is for diagnostic guidance only. Always verify repairs with a qualified technician before performing safety-critical work.
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