P20E9 2016 GMC Sierra Code - Reductant High Pressure
Quick Answer
The pressure sensor information is used by Reductant Control Module; this module manages the reductant pressure system driving the PWM signal to the pump (corresponding to a speed setpoint for the reductant pressure pump) in order to build the pressure in the reductant pressure pipeline after the system start-up. Common causes include Faulty Reductant Injector, Reductant Injector harness is open or shorted, Reductant Injector circuit poor electrical connection. 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
- P20E9 2016 GMC Sierra indicates Reductant High Pressure.
- Common causes
- Common causes include Faulty Reductant Injector, Reductant Injector harness is open or shorted, Reductant Injector circuit poor electrical connection.
- 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 P20E9 2016 GMC Sierra Description
What are the Possible Causes of the DTC P20E9 2016 GMC Sierra?
- Faulty Reductant Injector
- Reductant Injector harness is open or shorted
- Reductant Injector circuit poor electrical connection
- Faulty Reductant Pump and Sensor Assembly
How to Fix the DTC P20E9 2016 GMC Sierra?
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 P20E9 2016 GMC Sierra 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 P20E9 2016 GMC Sierra code?
Need more information on how to fix the P20E9 2016 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
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Frequently Asked Questions about P20E9 2016 GMC Sierra Code
1. What does OBDII code P20E9 mean on a 2016 GMC Sierra?
The code P20E9 indicates a problem with the Reductant High Pressure system in the vehicle.
2. What are the common symptoms of OBDII code P20E9 in a GMC Sierra?
Common symptoms of code P20E9 may include reduced engine performance, decreased fuel efficiency, and the illumination of the Check Engine light on the dashboard.
3. What are the possible causes of OBDII code P20E9 in a 2016 GMC Sierra?
Possible causes of code P20E9 can include issues with the reductant pump, faulty reductant pressure sensor, clogged reductant lines, or a malfunctioning reductant injector.
4. How can I diagnose OBDII code P20E9 in my GMC Sierra?
Diagnosing code P20E9 typically involves using a diagnostic scanner to retrieve the specific error codes, conducting a visual inspection of the reductant system components, and performing tests on the reductant pump, sensor, and injector.
5. What are some repair tips for fixing OBDII code P20E9 in a GMC Sierra?
Repairing code P20E9 may involve replacing a faulty reductant pump, sensor, or injector, cleaning or unclogging reductant lines, and resetting the Check Engine light after the issue has been resolved.
6. Can I continue driving my GMC Sierra with OBDII code P20E9?
It is not recommended to continue driving your GMC Sierra with an active P20E9 code, as it can lead to further damage to the reductant system and affect the vehicle's performance and emissions.
7. How much does it typically cost to repair OBDII code P20E9 in a GMC Sierra?
The cost of repairing code P20E9 in a GMC Sierra can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars including parts and labor.
8. Is OBDII code P20E9 related to emissions control in a 2016 GMC Sierra?
Yes, OBDII code P20E9 is related to the vehicle's emissions control system, specifically the reductant high-pressure system designed to reduce harmful emissions.
9. Can a DIY enthusiast fix OBDII code P20E9 in a GMC Sierra?
While some aspects of diagnosing and repairing code P20E9 may be tackled by a knowledgeable DIY enthusiast, it is recommended to seek professional help for accurate diagnosis and repair to ensure the issue is properly resolved.
10. How often does OBDII code P20E9 occur in a 2016 GMC Sierra?
OBDII code P20E9 in a 2016 GMC Sierra can occur sporadically due to various factors such as poor maintenance, driving conditions, or component wear, but it is not considered a common issue in everyday driving.
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