P0173 Lincoln Code - Fuel Trim Malfunction Bank 2
Quick Answer
The P0173 diagnostic trouble code (DTC) for Lincoln vehicles indicates a fuel trim malfunction in Bank 2 of the engine. Common causes include Faulty oxygen sensor, Vacuum leak in the intake system, Clogged fuel injector. 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 Lincoln indicates Fuel Trim Malfunction Bank 2.
- Common causes
- Common causes include Faulty oxygen sensor, Vacuum leak in the intake system, Clogged fuel injector.
- 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 P0173 Lincoln Description
The P0173 diagnostic trouble code (DTC) for Lincoln vehicles indicates a fuel trim malfunction in Bank 2 of the engine. This code is specifically related to the air-fuel mixture being too rich in Bank 2, which means there is too much fuel being injected into the combustion chamber in relation to the amount of air present. This imbalance can lead to inefficient combustion, reduced fuel economy, increased emissions, and potential damage to engine components over time.
Common Causes of P0173 Lincoln
- Faulty oxygen sensor
- Vacuum leak in the intake system
- Clogged fuel injector
- Malfunctioning mass airflow sensor
- Issue with the fuel pressure regulator
Symptoms of P0173 Lincoln
- Rough idling or engine stumbling
- Decreased fuel efficiency
- Engine misfires
- Check Engine Light illuminated
- Reduced engine performance
How to Fix P0173 Lincoln
- Use an OBD-II scanner to retrieve the specific DTC and confirm the diagnosis.
- Inspect the oxygen sensor in Bank 2 for proper operation and replace if necessary.
- Check for vacuum leaks in the intake system and repair any leaks found.
- Clean or replace clogged fuel injectors in Bank 2.
- Test and, if needed, replace the mass airflow sensor or fuel pressure regulator in Bank 2.
Cost to Fix P0173 Lincoln
The typical repair costs for addressing a P0173 fuel trim malfunction in Bank 2 can range from $200 to $600, depending on the specific cause of the issue and the cost of parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate based on your location and vehicle details.
Tech Notes for P0173 Lincoln
When is the Code Detected?
- The amount of mixture ratio compensation is not correct
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Frequently Asked Questions about P0173 Lincoln Code
1. What are the common symptoms of OBDII code P0173 (Fuel Trim Malfunction Bank 2) on a Lincoln?
- Common symptoms include poor fuel economy, rough idling, engine misfires, loss of power, and the illumination of the check engine light.
2. What are the possible causes of OBDII code P0173 on a Lincoln?
- Possible causes include a faulty oxygen sensor, vacuum leaks, fuel pressure issues, a dirty or clogged fuel injector, or a problem with the Mass Air Flow (MAF) sensor.
3. How can I diagnose the OBDII code P0173 on my Lincoln?
- Diagnosis typically involves using an OBDII scanner to retrieve the code, performing a visual inspection for leaks, checking the oxygen sensor readings, and testing the fuel pressure and injector operation.
4. Is it safe to continue driving with the OBDII code P0173 present on a Lincoln?
- While the vehicle may still be operable, it is recommended to address the issue promptly to prevent potential damage to the engine or emissions system.
5. Can I repair OBDII code P0173 on my Lincoln by simply clearing the code?
- Clearing the code may temporarily turn off the check engine light, but it will not fix the underlying issue causing the code. Proper diagnosis and repair are necessary to resolve the problem.
6. How much does it typically cost to repair OBDII code P0173 on a Lincoln?
- The cost of repair can vary depending on the cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.
7. Are there any DIY repair tips for addressing OBDII code P0173 on a Lincoln?
- DIY tips may include checking for visible vacuum leaks, cleaning the MAF sensor, inspecting and cleaning the oxygen sensors, and ensuring proper fuel system maintenance.
8. What are the long-term effects of ignoring OBDII code P0173 on a Lincoln?
- Ignoring the code can lead to reduced fuel efficiency, increased emissions, potential engine damage, and may cause the vehicle to fail an emissions test.
9. Can a faulty catalytic converter cause OBDII code P0173 on a Lincoln?
- A faulty catalytic converter may contribute to the code if it is not effectively processing the exhaust gases, but it is not typically the primary cause of P0173.
10. Will resetting the vehicle's computer system resolve OBDII code P0173 on a Lincoln?
- Resetting the computer system may temporarily clear the code, but it will not fix the underlying issue. Proper diagnosis and repair are necessary for a permanent solution.
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