Cylinder 5 Injector Circuit Low
P0273 — Cylinder 5 Injector Circuit Low
System: Powertrain | Type: Generic (OBD-II Standard) | Make: Generic
P0273 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.
When P0273 is stored, the module has detected a signal or supply voltage lower than the expected operating range.
Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.
Because P0273 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.
The P0273 fault code is triggered when the powertrain control module (PCM) detects a low voltage condition in the injector circuit for cylinder 5. This condition typically results from electrical issues such as a short to ground, damaged connectors, or a malfunctioning injector, leading to inadequate fuel delivery.
Detailed possible causes for P0273 are available to TaT members.
Unlock with Free TrialStep-by-step diagnostic guidance for P0273 is available to TaT members. Our Diagnostic Assistant provides professional-level troubleshooting procedures written by experienced technicians.
Unlock with Free Trial| Code | P0273 |
| System | Powertrain |
| Type | Generic (OBD-II Standard) |
| Make | Generic |
| Causes | Available |
| Diag. Assistant | Available |
| Video | — |
Get complete diagnostic info, causes, and repair guidance.
Start Free 7-Day Trial Member LoginSearch all 8,602 fault codes with complete diagnostic details, possible causes, and repair guidance.
Start Your Free 7-Day Trial Member Login© 2026 The Automotive Technician (TaT) — www.tat.net.au