AutoCodes – Mazda – P0173 Mazda

P0173 Mazda Code - Bank 2 Adaptive Fuel Table At Calibrated Limit

Quick Answer

With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. Common causes include Intake air leaks, Faulty front heated oxygen sensor, Ignition misfiring. 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
P0173 Mazda indicates Bank 2 Adaptive Fuel Table At Calibrated Limit.
Common causes
Common causes include Intake air leaks, Faulty front heated oxygen sensor, Ignition misfiring.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 8,081
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 02, 2020
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Code P0173 Mazda Description

With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The Engine Control Module (ECM) calculates the necessary compensation to correct the offset between the actual and the theoretical ratios.
In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and light up the MIL (2 trip detection logic).
OBDII Code P0173 Mazda - Bank 2 Adaptive Fuel Table At Calibrated Limit - AutoCodes.com
P0173 Mazda Code - Bank 2 Adaptive Fuel Table At Calibrated Limit

What are the Possible Causes of the DTC P0173 Mazda?

  • Intake air leaks
  • Faulty front heated oxygen sensor
  • Ignition misfiring
  • Faulty fuel injectors
  • Exhaust gas leaks
  • Incorrect fuel pressure
  • Lack of fuel
  • Faulty Mass Air Flow (MAF) sensor
  • Incorrect Positive Crankcase Ventilation (PCV) hose connection

How to Fix the DTC P0173 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0173 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.

Need more information about the P0173 Mazda code?

Need more information on how to fix the P0173 Mazda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0173 Mazda code diagnosed by a professional: Find a repair shop in your area

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 P0173 Mazda Code

1. What are the common symptoms of OBDII code P0173 on a Mazda indicating Bank 2 Adaptive Fuel Table At Calibrated Limit?

The common symptoms include rough idling, decreased fuel efficiency, and the Check Engine light illuminating on the dashboard.

2. What are the possible causes of OBDII code P0173 in a Mazda, specifically related to Bank 2 Adaptive Fuel Table At Calibrated Limit?

Potential causes may include a faulty oxygen sensor, a vacuum leak in the intake system, a malfunctioning fuel injector, or issues with the mass airflow sensor.

3. How can I diagnose the OBDII code P0173 on my Mazda related to Bank 2 Adaptive Fuel Table At Calibrated Limit?

Diagnosis involves using an OBDII scanner to read the code, checking for any accompanying codes, inspecting the oxygen sensor, conducting a smoke test for vacuum leaks, and testing the fuel injectors.

4. What are the recommended repair tips for addressing OBDII code P0173 in a Mazda with Bank 2 Adaptive Fuel Table At Calibrated Limit?

Repair tips may include replacing the oxygen sensor, fixing any vacuum leaks, cleaning or replacing the fuel injectors, and ensuring proper airflow through the intake system.

5. Can driving with OBDII code P0173 related to Bank 2 Adaptive Fuel Table At Calibrated Limit cause further damage to my Mazda?

Continuing to drive with this code may lead to decreased engine performance, potential damage to the catalytic converter, and increased fuel consumption.

6. How crucial is it to address OBDII code P0173 on a Mazda signaling Bank 2 Adaptive Fuel Table At Calibrated Limit promptly?

It is important to address this code promptly to prevent further issues, maintain optimal engine performance, and prevent potential damage to other components in the vehicle.

7. Is it possible to reset the OBDII code P0173 on a Mazda with Bank 2 Adaptive Fuel Table At Calibrated Limit without making any repairs?

While clearing the code may temporarily turn off the Check Engine light, the underlying issue causing the code will persist until properly diagnosed and repaired.

8. Are there any preventive measures to avoid encountering OBDII code P0173 related to Bank 2 Adaptive Fuel Table At Calibrated Limit in a Mazda?

Regular maintenance, such as changing the oxygen sensor at recommended intervals, inspecting for vacuum leaks, and using quality fuel, can help prevent this code from appearing.

9. How long does it typically take to repair OBDII code P0173 on a Mazda linked to Bank 2 Adaptive Fuel Table At Calibrated Limit?

The repair duration can vary based on the specific cause of the code, but it may take anywhere from a few hours to a day, depending on the complexity of the issue.

10. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P0173 in a Mazda associated with Bank 2 Adaptive Fuel Table At Calibrated Limit?

While some repairs related to this code may be DIY-friendly, diagnosing and fixing certain underlying issues may require specialized tools and expertise, making professional assistance advisable in some cases.

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