P0173 Lincoln Code - Fuel Trim Malfunction Bank 2
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 Lincoln indicates Fuel Trim Malfunction Bank 2.
- 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.
Code P0173 Lincoln Description
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).
What are the Possible Causes of the DTC P0173 Lincoln?
- 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 Lincoln?
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 P0173 Lincoln 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 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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