P0273 Mercury Code - Cylinder 5 Injector Circuit Low
Quick Answer
The Engine Control Module (ECM) supplies voltage to each Fuel Injector on the high control circuits. Common causes include Dirty Fuel Injector 5, Faulty Fuel Injector 5, Plugged Fuel Injector 5. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0273 Mercury indicates Cylinder 5 Injector Circuit Low.
- Common causes
- Common causes include Dirty Fuel Injector 5, Faulty Fuel Injector 5, Plugged Fuel Injector 5.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0273 Mercury Description
What are the Possible Causes of the DTC P0273 Mercury?
- Dirty Fuel Injector 5
- Faulty Fuel Injector 5
- Plugged Fuel Injector 5
- Fuel injector 5 harness is open or shorted
- Fuel injector 5 circuit poor electrical connection
How to Fix the DTC P0273 Mercury?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0273 Mercury code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0273 Mercury Code
1. What does OBDII code P0273 mean on a Mercury?
P0273 indicates a problem with the cylinder 5 injector circuit, specifically that the voltage is lower than expected.
2. What are the common symptoms of code P0273 on a Mercury?
Symptoms include rough idling, loss of power, poor fuel economy, engine misfires, and possibly the check engine light turning on.
3. What causes code P0273 Cylinder 5 Injector Circuit Low on a Mercury?
Common causes include a faulty fuel injector, damaged wiring or connectors, a malfunctioning powertrain control module (PCM), or a blown fuse in the injector circuit.
4. Can I drive my Mercury with code P0273?
It’s not recommended to drive with this code, as it can lead to engine misfires and potential damage to other components.
5. How do I diagnose code P0273 on my Mercury?
Start by inspecting the wiring and connectors for cylinder 5’s injector for damage, test the injector’s resistance, check for voltage at the injector, and scan for other related codes.
6. How do I fix code P0273 on a Mercury?
Repairs may include replacing the cylinder 5 fuel injector, repairing or replacing damaged wiring or connectors, or addressing PCM issues.
7. How much does it cost to fix code P0273 on a Mercury?
Repair costs can vary, ranging from $150–$500 depending on whether you need a simple wiring repair or a new fuel injector.
8. Can a dirty fuel injector cause code P0273 on a Mercury?
Yes, a clogged or dirty injector may result in low circuit voltage or improper operation.
9. Does code P0273 always require fuel injector replacement on a Mercury?
Not always; the issue could be with the wiring, connectors, or PCM rather than the injector itself.
10. How do I prevent code P0273 Cylinder 5 Injector Circuit Low from occurring again?
Regular maintenance, such as cleaning fuel injectors and inspecting wiring, can help prevent this issue.
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