AutoCodes – Chevrolet – P207F Chevrolet

P207F Chevrolet 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 Chevrolet 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 7,697

How popular is this code, among other codes? Low

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 Jul 01, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P207F Chevrolet 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 Chevrolet - Reductant Quality Performance - AutoCodes.com — P207F Chevrolet Code - Reductant Quality Performance

What does this mean?

What are the Possible Causes of the DTC P207F Chevrolet?

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 Chevrolet?

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 does this mean?

Code Tech Notes

There is a Factory Service Bulletin for the following Chevrolet models:
2010 Chevrolet Express
2011 Chevrolet Express
2011 Chevrolet Silverado
Chevrolet Factory Service Bulletin OBDII Code P207F

What is the Cost to Diagnose the Code?

Labor: 1.0

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

Need Help with the Code?

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

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 Chevrolet Code

1. What are the common symptoms of OBDII code P207F in a Chevrolet related to Reductant Quality Performance?

- Common symptoms include reduced engine power, poor fuel efficiency, and the illumination of the Check Engine Light.

2. What does OBDII code P207F in a Chevrolet indicate about Reductant Quality Performance?

- This code indicates that the reductant quality sensor has detected an issue with the quality of the diesel exhaust fluid (DEF) in the system.

3. What are the possible causes of OBDII code P207F in a Chevrolet?

- Possible causes include a malfunctioning reductant quality sensor, contaminated or low-quality DEF, a faulty DEF tank heater, or wiring issues.

4. How can I diagnose the cause of OBDII code P207F in my Chevrolet?

- Diagnosis typically involves inspecting the DEF system components, checking the quality of the DEF fluid, testing the reductant quality sensor, and scanning for other related trouble codes.

5. Can I continue driving my Chevrolet with OBDII code P207F present?

- It is not recommended to continue driving with this code present, as it can lead to reduced engine performance and potential damage to the emissions system.

6. How can I repair OBDII code P207F in my Chevrolet?

- Repair may involve replacing the reductant quality sensor, draining and refilling the DEF tank with high-quality fluid, checking and repairing any wiring issues, or addressing other related component failures.

7. Is it safe to reset the Check Engine Light after fixing OBDII code P207F in a Chevrolet?

- Yes, once the underlying issue causing the code has been resolved, it is safe to clear the code and reset the Check Engine Light using an OBDII scanner.

8. Can a DIY enthusiast fix OBDII code P207F in a Chevrolet at home?

- Some aspects of the repair, such as checking DEF fluid quality or inspecting wiring connections, can be done at home by a knowledgeable DIY enthusiast. However, complex repairs may require professional assistance.

9. How often should I check the DEF fluid quality in my Chevrolet to prevent OBDII code P207F?

- It is recommended to check the DEF fluid quality regularly, especially before long trips or as part of routine maintenance, to prevent issues with the reductant system.

10. Are there any preventive measures to avoid OBDII code P207F in a Chevrolet?

- To prevent this code, use only high-quality DEF fluid, keep the DEF tank topped up, perform regular maintenance on the emissions system, and address any warning signs promptly.