P20EE Ford Code - SCR NOx Catalyst Efficiency Below Threshold Bank 1
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
- P20EE Ford indicates SCR NOx Catalyst Efficiency Below Threshold Bank 1.
- 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 P20EE 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 P20EE Ford?
- Faulty NOx Sensor
- Diesel Exhaust Fluid
- Faulty Selective Catalyst Reduction (SCR) Catalyst
How to Fix the DTC P20EE 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.
Code Tech Notes
2011-2012 Ford F-Super Duty Factory Service Bulletin OBDII Code P20EE
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P20EE 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 P20EE Ford Code
1. What are the common symptoms of OBDII code P20EE in a Ford, indicating SCR NOx Catalyst Efficiency Below Threshold Bank 1?
- Common symptoms include the check engine light coming on, reduced engine performance, and potential fuel efficiency issues.
2. What are the possible causes of the P20EE code in a Ford vehicle?
- The P20EE code can be triggered by issues such as a faulty NOx sensor, a malfunctioning SCR (Selective Catalytic Reduction) system, or a problem with the catalyst itself.
3. How serious is the SCR NOx Catalyst Efficiency Below Threshold Bank 1 fault code in a Ford?
- While the vehicle may still be drivable with this fault, it is important to address it promptly to prevent potential long-term damage to the catalytic converter and ensure the vehicle meets emission standards.
4. Can driving with the P20EE code active cause further damage to the vehicle?
- Continuing to drive with the P20EE code may lead to increased emissions, reduced fuel efficiency, and potential damage to the catalytic converter over time.
5. What are some DIY repair tips for addressing the P20EE code in a Ford?
- DIY repair options may include checking for loose connections in the SCR system, ensuring proper DEF (diesel exhaust fluid) levels, and inspecting the NOx sensor for any visible damage.
6. How can a mechanic diagnose the P20EE code in a Ford?
- A mechanic can use a diagnostic scanner to retrieve the specific trouble code, perform tests on the NOx sensor and SCR system components, and inspect the catalyst for any signs of deterioration.
7. Is it safe to continue driving the vehicle after resetting the P20EE code?
- It is generally safe to drive the vehicle after resetting the code, but if the underlying issue is not addressed, the code is likely to reappear, and emission levels may remain out of compliance.
8. How much does it typically cost to repair the SCR NOx Catalyst Efficiency Below Threshold Bank 1 fault in a Ford?
- The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred dollars for sensor replacement to over a thousand dollars for more extensive repairs involving the SCR system.
9. Can a dirty fuel system contribute to triggering the P20EE code in a Ford?
- Yes, a dirty fuel system can potentially affect the efficiency of the SCR system and trigger the P20EE code, making regular fuel system maintenance important for emission control.
10. Are there any recalls or technical service bulletins related to the P20EE code in Ford vehicles?
- It's recommended to check with Ford or a certified dealership for any existing recalls or technical service bulletins related to the SCR NOx Catalyst Efficiency Below Threshold Bank 1 fault to see if the repair may be covered under warranty.
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