AutoCodes – Generic – P207F

P207F Code - Reductant Quality Performance

Quick Answer

The aftertreatment system is equipped with two Nox Sensors and modules. Common causes include Degraded, Diluted or Incorrect Diesel Exhaust Fluid, Exhaust System leak, Diesel Exhaust Fluid Deposit in Def Injector Decomp Tube. 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: P207F indicates Reductant Quality Performance.
Common causes: Common causes include Degraded, Diluted or Incorrect Diesel Exhaust Fluid, Exhaust System leak, Diesel Exhaust Fluid Deposit in Def Injector Decomp Tube.
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 Popularity 64,176

How popular is this code, among other codes? Medium

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 12, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P207F Description

The aftertreatment system is equipped with two Nox Sensors and modules. The upstream NOx Sensor 1/1 is located on the Turbocharger elbow downpipe and is permanently connected to a corresponding Nox Sensor Module mounted to the hot side of the engine block. The downstream NOx Sensor 1/2 is located at the outlet of the SCR Catalyst and is permanently connected to a corresponding Nox Sensor Module which is mounted on the right frame rail. The NOx Sensors and NOx Sensor Modules are calibrated to each other and must be replaced as an assembly. The two NOx Sensor and Module assemblies are not interchangeable. The NOx Sensor Modules are smart devices and communicate with the Powertrain Control Module (PCM) over the J1939 Data Link. The NOx Sensor Modules perform their own internal diagnostics and report malfunctions back to the PCM. The NOx Sensors are used to monitor the efficiency of the SCR Catalyst and dosing system. The PCM will illuminate the Malfunction Indicator Lamp (MIL) after the diagnostic runs and fails in two consecutive drive cycles. The PCM will turn off the MIL immediately after the monitor runs and passes.

OBDII Code P207F - Reductant Quality Performance - AutoCodes.com — P207F Code - Reductant Quality Performance

What does this mean?

What are the Possible Causes of the DTC P207F?

Degraded, Diluted or Incorrect Diesel Exhaust Fluid
Exhaust System leak
Diesel Exhaust Fluid Deposit in Def Injector Decomp Tube
Defective SCR Catalyst

How to Fix the DTC P207F?

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 P207F 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 P207F code?

Need more information on how to fix the P207F code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P207F code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P207F Chevrolet — Reductant Quality Performance
P207F Dodge — Reductant Quality Performance
P207F Ford — Reductant Quality Performance
P207F GMC — Reductant Quality Performance

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P207F Code

1. What are common symptoms of OBDII code P207F (Reductant Quality Performance)?

- Common symptoms include reduced engine performance, decreased fuel efficiency, and the illumination of the check engine light.

2. What are the potential causes of OBDII code P207F?

- Possible causes of code P207F include issues with the diesel exhaust fluid (DEF) quality sensor, contaminated DEF, DEF system leaks, or a malfunctioning selective catalytic reduction (SCR) system.

3. How can I diagnose OBDII code P207F?

- Diagnosis typically involves using a diagnostic scanner to read the code and checking the DEF quality sensor, inspecting the DEF system for leaks, and testing the SCR system components.

4. Can I continue driving my vehicle with OBDII code P207F?

- It is not recommended to drive the vehicle with code P207F active, as it can lead to increased emissions and potential damage to the engine components.

5. How can I repair OBDII code P207F?

- Repairing code P207F may involve replacing the DEF quality sensor, draining and refilling the DEF tank with fresh fluid, repairing any DEF system leaks, or addressing any SCR system malfunctions.

6. Can I reset OBDII code P207F without fixing the underlying issue?

- While clearing the code may temporarily turn off the check engine light, it is essential to address the root cause of code P207F to prevent further issues and ensure proper vehicle operation.

7. How often does OBDII code P207F occur in vehicles?

- Code P207F can occur in vehicles equipped with a diesel engine and a selective catalytic reduction system, typically found in newer diesel vehicles.

8. Are there any maintenance tips to prevent OBDII code P207F from appearing?

- Regularly checking the DEF fluid level and quality, performing scheduled maintenance on the SCR system, and using high-quality DEF can help prevent code P207F from occurring.

9. Is OBDII code P207F a serious issue?

- While code P207F may not cause immediate drivability issues, ignoring the problem can lead to increased emissions, reduced fuel efficiency, and potential damage to the vehicle's emission control system.

10. Can a DIY enthusiast repair OBDII code P207F at home?

- Depending on the underlying cause, some DIY enthusiasts with the necessary tools and experience may be able to address code P207F at home, but complex issues may require professional assistance.