P20E9 2016 Chevrolet Silverado 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 Chevrolet Silverado 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 Chevrolet Silverado Description
What are the Possible Causes of the DTC P20E9 2016 Chevrolet Silverado?
- 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 Chevrolet Silverado?
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 Chevrolet Silverado 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 Chevrolet Silverado code?
Need more information on how to fix the P20E9 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P20E9 2016 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P20E9 2016 Chevrolet Silverado Code
1. What does the OBDII code P20E9 mean on a 2016 Chevrolet Silverado?
P20E9 indicates "Reductant Pressure Too High," which relates to the SCR (Selective Catalytic Reduction) system responsible for reducing emissions using DEF (Diesel Exhaust Fluid).
2. What are common symptoms of the P20E9 code in a 2016 Silverado?
Symptoms may include a check engine light, DEF system warnings on the dashboard, reduced engine performance, and the vehicle possibly entering limp mode.
3. What causes the P20E9 code on a 2016 Chevrolet Silverado?
Common causes include a malfunctioning reductant pump, clogged DEF lines, a faulty pressure sensor, or contamination in the DEF fluid.
4. Can I drive my 2016 Silverado with the P20E9 code?
While the truck may still be drivable, prolonged operation with this code can lead to reduced performance, potential SCR system damage, and failure to meet emissions standards.
5. How is the P20E9 code diagnosed on a 2016 Chevrolet Silverado?
A technician will typically use a scan tool to confirm the code, inspect the reductant system for clogs or damage, test the pressure sensor, and verify the DEF fluid quality.
6. What are common repairs for the P20E9 code in a 2016 Chevrolet Silverado?
Repairs may include replacing the reductant pump, cleaning or replacing clogged DEF lines, replacing the pressure sensor, or draining and refilling the DEF tank with fresh fluid.
7. What is the cost to fix the P20E9 code on a 2016 Chevrolet Silverado?
The cost varies depending on the issue, but repairs generally range from $200 to $1,000, with parts like the reductant pump or pressure sensor being the most expensive.
8. Can contaminated DEF fluid cause the P20E9 code?
Yes, contaminated or incorrect DEF fluid can clog the reductant system, leading to high pressure and triggering the P20E9 code.
9. How can I prevent the P20E9 code on my 2016 Silverado?
To prevent this code, always use high-quality DEF fluid, maintain the reductant system regularly, and address any DEF-related warnings promptly.
10. Will a P20E9 code clear itself after repairs?
In most cases, the code will need to be cleared using an OBDII scan tool after the underlying issue is resolved. However, some vehicles may reset the code after several drive cycles if the problem no longer exists.
Discuss the causes and fixes for P20E9 2016 Chevrolet Silverado OBDII Code
Code P20E9 2016 Chevrolet Silverado 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.
