AutoCodes – Mazda – P0273 Mazda

P0273 Mazda Code - Fuel Injector Driver Circuit Fault Short To Ground Injector 5

Quick Answer

Code P0273 is triggered when the Engine Control Module (ECM) detects a low voltage in the Fuel Injector 5 Circuit. 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 Mazda indicates Fuel Injector Driver Circuit Fault Short To Ground Injector 5.
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.

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Code Popularity 3,018

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 02, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0273 Mazda Description

Code P0273 is triggered when the Engine Control Module (ECM) detects a low voltage in the Fuel Injector 5 Circuit. During normal conditions, the ECM turns the Fuel Injectors ON and OFF in the Fuel Injection System.

OBDII Code P0273 Mazda - Fuel Injector Driver Circuit Fault Short To Ground Injector 5 - AutoCodes.com — P0273 Mazda Code - Fuel Injector Driver Circuit Fault Short To Ground Injector 5

What does this mean?

What are the Possible Causes of the DTC P0273 Mazda?

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 Mazda?

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.

What does this mean?

Code Tech Notes

Clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0273 Mazda 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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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0273 Mazda Code

1. What are common symptoms of OBDII code P0273 in a Mazda related to the Fuel Injector Driver Circuit Fault for Injector 5?

- Common symptoms include rough idling, engine misfires, loss of power, and decreased fuel efficiency.

2. What are possible causes of OBDII code P0273 in a Mazda indicating a Fuel Injector Driver Circuit Fault for Injector 5?

- Possible causes include a faulty fuel injector, damaged wiring or connectors, a defective engine control module (ECM), or a short circuit to ground in the circuit.

3. How can I diagnose the OBDII code P0273 in a Mazda suggesting a Fuel Injector Driver Circuit Fault for Injector 5?

- Diagnose the code by conducting a visual inspection of the wiring and connectors, testing the fuel injector for proper operation, and using a multimeter to check for continuity and shorts in the circuit.

4. Can I continue driving my Mazda with OBDII code P0273 indicating a Fuel Injector Driver Circuit Fault for Injector 5?

- It is not recommended to drive the vehicle with this code as it can lead to further engine damage and potential safety hazards.

5. How can I repair OBDII code P0273 in a Mazda due to a Fuel Injector Driver Circuit Fault for Injector 5?

- Repair options include replacing the faulty fuel injector, repairing or replacing damaged wiring or connectors, and resetting the ECM after completing the repairs.

6. Is it possible to clear the OBDII code P0273 in a Mazda related to the Fuel Injector Driver Circuit Fault for Injector 5 without fixing the underlying issue?

- Clearing the code without addressing the root cause will only temporarily remove the check engine light, and the issue may resurface, causing further problems.

7. Are there any preventive maintenance tips to avoid encountering OBDII code P0273 in a Mazda for Injector 5?

- Regularly inspecting the fuel injectors, wiring, and connectors for any signs of wear or damage can help prevent issues that may trigger this fault code.

8. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P0273 in a Mazda associated with a Fuel Injector Driver Circuit Fault for Injector 5?

- While some repairs may be within reach for those with basic knowledge, diagnosing and fixing this specific issue may require advanced troubleshooting skills and specialized tools.

9. How long does it typically take to repair OBDII code P0273 in a Mazda caused by a Fuel Injector Driver Circuit Fault for Injector 5?

- The repair time can vary depending on the exact cause of the issue, but it may take a few hours to a full day to diagnose and fix the problem effectively.

10. Can a faulty fuel injector driver circuit impact the performance of other components in a Mazda, leading to additional fault codes?

- Yes, a faulty fuel injector driver circuit can affect the overall engine performance, potentially triggering other related fault codes and causing various drivability issues.