P20F0 Dodge Code - SCR NOx Catalyst Over Temperature 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
- P20F0 Dodge indicates SCR NOx Catalyst Over Temperature 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 P20F0 Dodge 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 P20F0 Dodge?
- Faulty NOx Sensor
- Diesel Exhaust Fluid
- Faulty Selective Catalyst Reduction (SCR) Catalyst
How to Fix the DTC P20F0 Dodge?
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 P20F0 Dodge 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 P20F0 Dodge code?
Need more information on how to fix the P20F0 Dodge code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P20F0 Dodge code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P20F0 Dodge Code
What does the OBD-II code P20F0 mean on a Dodge vehicle?
The P20F0 code indicates "SCR NOx Catalyst Over Temperature Bank 2," meaning the selective catalytic reduction (SCR) system has detected excessively high temperatures in the NOx catalyst on the second bank of the engine.
What are the common symptoms of the P20F0 code?
Symptoms may include an illuminated check engine light, reduced fuel efficiency, engine derate mode, excessive exhaust smoke, or a sulfur-like smell from the exhaust.
What causes the P20F0 code to appear?
Common causes include a malfunctioning NOx sensor, a faulty SCR catalytic converter, an exhaust leak upstream of the SCR system, or issues with the diesel exhaust fluid (DEF) system.
Is it safe to drive with the P20F0 code?
Driving with this code is not recommended, as it indicates potential damage to the SCR system and could lead to reduced engine performance or emissions compliance issues.
How can I diagnose the P20F0 code on my Dodge?
Diagnosis typically involves scanning for additional codes, inspecting the NOx sensors and wiring for damage, checking for exhaust leaks, and testing the SCR system for proper operation.
What role does the diesel exhaust fluid (DEF) system play in the P20F0 code?
The DEF system helps reduce NOx emissions in the SCR system. Low-quality DEF, incorrect DEF concentration, or a DEF system malfunction can trigger the P20F0 code.
Can a dirty or clogged SCR catalyst cause the P20F0 code?
Yes, a clogged or contaminated SCR catalyst can lead to overheating and trigger the P20F0 code.
How much does it cost to fix the P20F0 code on a Dodge?
Repair costs vary depending on the cause but can range from $200 for a sensor replacement to over $2,000 for SCR catalyst replacement.
What tools are needed to troubleshoot the P20F0 code?
Basic tools include an OBD-II scanner capable of reading live data, a multimeter for electrical checks, and possibly a DEF refractometer for testing DEF concentration.
Can the P20F0 code be prevented?
Regular maintenance, using high-quality DEF, and addressing exhaust system issues promptly can help prevent the P20F0 code from occurring.
Discuss the causes and fixes for P20F0 Dodge OBDII Code
Code P20F0 Dodge comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
