P208F GMC Code - Reductant Injection Valve Stuck Closed Bank 2 Unit 1
Quick Answer
The Reductant Dosing Valve (Reductant Injection Valve) is used to meter and atomize the reductant liquid before it is mixed with the exhaust gas. Common causes include Faulty Reductant Injection Valve, Reductant Injection Valve harness is open or shorted, Reductant Injection Valve 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
- P208F GMC indicates Reductant Injection Valve Stuck Closed Bank 2 Unit 1.
- Common causes
- Common causes include Faulty Reductant Injection Valve, Reductant Injection Valve harness is open or shorted, Reductant Injection Valve 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 P208F GMC Description
What are the Possible Causes of the DTC P208F GMC?
- Faulty Reductant Injection Valve
- Reductant Injection Valve harness is open or shorted
- Reductant Injection Valve circuit poor electrical connection
How to Fix the DTC P208F GMC?
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 P208F GMC 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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Frequently Asked Questions about P208F GMC Code
What does the OBDII code P208F mean on a GMC vehicle?
The P208F code indicates that the reductant injection valve for Bank 2 Unit 1 is stuck in the closed position, preventing proper diesel exhaust fluid (DEF) injection.
What are the symptoms of the P208F code on a GMC?
Common symptoms include the Check Engine Light, poor emissions performance, increased NOx emissions, and possible DEF system warning messages.
What causes the P208F code on a GMC?
The common causes are a malfunctioning reductant injection valve, clogged DEF injector, electrical issues such as damaged wiring or connectors, or a faulty DEF pump.
Can I drive my GMC with the P208F code active?
It is possible to drive the vehicle, but it is not recommended as it can lead to increased emissions and potential damage to the DEF system.
How is the P208F code diagnosed on a GMC?
A technician will use a scan tool to confirm the code, inspect the DEF injection system, check for electrical problems, and test the reductant injection valve for proper operation.
How can I fix the P208F code on my GMC?
Repairs may include cleaning or replacing the DEF injector, repairing damaged wiring, replacing the reductant injection valve, or addressing DEF pump issues.
Is the P208F code specific to certain GMC models?
The P208F code typically applies to GMC vehicles equipped with diesel engines and DEF systems, such as the Sierra HD or Canyon.
Can a clogged DEF injector cause the P208F code?
Yes, a clogged DEF injector can prevent the reductant from being injected, resulting in the P208F code.
What tools are needed to fix the P208F code on a GMC?
Common tools include a diagnostic scan tool, a multimeter for electrical testing, and possibly specialized tools for removing and cleaning the DEF injector.
How much does it cost to repair the P208F code on a GMC?
Repair costs vary depending on the issue but can range from $200 for a cleaning or minor repair to over $1,000 for part replacements, such as the injection valve or DEF pump.
Discuss the causes and fixes for P208F GMC OBDII Code
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