OBD-II FAULT CODE
P0273
Cylinder 5 Injector Circuit Low
Meaning, symptoms, likely causes, diagnostic checks and repair guidance for P0273.
- Check Engine light
- Poor drivability or reduced fuel economy depending on fault
- Hard start, hesitation, stalling or inaccurate fuel reading depending on component
- Low fuel pressure
- Faulty pump/regulator/sensor
- Wiring fault
- Clogged filter
- Injector fault
- Scan all modules and record freeze-frame data before clearing codes
- Check battery voltage and related fuses
- Check fuel pressure and sensor data
- Inspect pump/injector fuses, relay, wiring and grounds
- Check sensor reference voltage, ground and signal voltage
- Repair wiring/relay issues, replace clogged filter, failed pump/sensor/injector only after testing
- Repair poor ground/power feed or replace confirmed faulty sensor
Related Codes
Need more help?
Search manuals, wiring diagrams and technical service bulletins.
Not sure what to do next?
Get step-by-step instructions and professional repair information.
Disclaimer: Information is provided for general guidance only and may not apply to all vehicles. Always consult a qualified technician.