P20F2 Ford Code - SCR NOx Catalyst Efficiency Below Threshold Bank 2
Quick Answer
The Selective Catalyst Reduction (SCR) catalyst is monitored to ensure it is capable of NOx conversion. Common causes include Faulty NOx Sensor, Diesel Exhaust Fluid, Faulty Selective Catalyst Reduction (SCR) Catalyst. 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
- P20F2 Ford indicates SCR NOx Catalyst Efficiency Below Threshold Bank 2.
- Common causes
- Common causes include Faulty NOx Sensor, Diesel Exhaust Fluid, Faulty Selective Catalyst Reduction (SCR) Catalyst.
- 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 P20F2 Ford Description
The reductant, Diesel Exhaust Fluid (DEF), which is used as part of the SCR catalyst reaction, is monitored to ensure the tank is not refilled with an improper reductant. Upon detection of a refill event, the monitor is activated. After the SCR Catalyst Efficiency Monitor has completed and the SCR has been determined to be functional, the efficiency monitor continues to calculate the cumulative efficiency of the system. Each subsequent value for cumulative efficiency is included in two filtering routines, one for short term efficiency and the other for long term efficiency. If the difference between the two filtered efficiencies becomes greater than a threshold, a fault is indicated. the short term efficiency needs to be less than 0.20 and the delta between short and long term efficiency needs to be greater than 0.10.
What are the Possible Causes of the DTC P20F2 Ford?
- Faulty NOx Sensor
- Diesel Exhaust Fluid
- Faulty Selective Catalyst Reduction (SCR) Catalyst
How to Fix the DTC P20F2 Ford?
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 P20F2 Ford 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 P20F2 Ford Code
1. What are the common symptoms of OBDII code P20F2 Ford?
- Common symptoms include reduced engine performance, decreased fuel efficiency, and the illumination of the check engine light.
2. What can cause the OBDII code P20F2 Ford to trigger?
- The code is typically triggered when the Selective Catalytic Reduction (SCR) NOx Catalyst efficiency falls below the threshold for Bank 2.
3. How serious is the OBDII code P20F2 Ford?
- This code is considered serious as it indicates an issue with the NOx catalyst efficiency, which can lead to increased emissions and potential damage to the catalytic converter.
4. Can driving with the OBDII code P20F2 Ford cause further damage?
- Continuing to drive with this code may result in further damage to the catalytic converter and emission control system, leading to more expensive repairs in the long run.
5. What are some possible repair tips for OBDII code P20F2 Ford?
- Repair tips may include checking and replacing the NOx sensor, inspecting the SCR system components for damage or leaks, and resetting the fault code after repairs are made.
6. How can I diagnose the OBDII code P20F2 Ford?
- Diagnosing this code typically involves using a scan tool to read the code, checking for any related codes, and performing a thorough inspection of the SCR system components.
7. Is it safe to continue driving with the check engine light on due to OBDII code P20F2 Ford?
- It is not recommended to drive with the check engine light on, as it indicates a potential issue that needs to be addressed promptly to prevent further damage.
8. Can I clear the OBDII code P20F2 Ford on my own?
- While you can clear the code with a scan tool, it is important to diagnose and repair the underlying issue first to prevent the code from reoccurring.
9. How much does it typically cost to repair OBDII code P20F2 Ford?
- The cost of repairs for this code can vary depending on the extent of the issue and the specific components that need to be replaced, but it may range from a few hundred to a few thousand dollars.
10. What is the best course of action if I encounter the OBDII code P20F2 Ford?
- The best course of action is to have the vehicle diagnosed by a qualified mechanic to determine the exact cause of the issue and proceed with the necessary repairs to restore proper functionality.
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