P2058 GMC Code - Reductant Injection Valve Circuit High Bank 2 Unit 2
Quick Answer
The P2058 diagnostic trouble code (DTC) for GMC vehicles specifically refers to a problem with the reductant injection valve circuit on Bank 2 Unit 2. Common causes include Faulty Reductant Injection Valve: The most common cause of the P2058 code is a malfunctioning reductant injection valve on Bank 2 Unit 2, Wiring Issues: Problems with the wiring harness or connectors associated with the reductant injection valve circuit can trigger this code, Corrosion: Corrosion or damage to the electrical connections in the reductant injection system can lead to high voltage conditions. 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
- P2058 GMC indicates Reductant Injection Valve Circuit High Bank 2 Unit 2.
- Common causes
- Common causes include Faulty Reductant Injection Valve: The most common cause of the P2058 code is a malfunctioning reductant injection valve on Bank 2 Unit 2, Wiring Issues: Problems with the wiring harness or connectors associated with the reductant injection valve circuit can trigger this code, Corrosion: Corrosion or damage to the electrical connections in the reductant injection system can lead to high voltage conditions.
- 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 P2058 GMC Description
The P2058 diagnostic trouble code (DTC) for GMC vehicles specifically refers to a problem with the reductant injection valve circuit on Bank 2 Unit 2. This code indicates that there is a high voltage condition detected in the reductant injection valve circuit for the second unit on the second bank of the engine. The reductant injection system is part of the exhaust aftertreatment system in modern diesel vehicles, and it is responsible for injecting a urea-based solution (commonly known as diesel exhaust fluid or DEF) into the exhaust stream to reduce harmful emissions.
Common Causes of P2058 GMC
- Faulty Reductant Injection Valve: The most common cause of the P2058 code is a malfunctioning reductant injection valve on Bank 2 Unit 2.
- Wiring Issues: Problems with the wiring harness or connectors associated with the reductant injection valve circuit can trigger this code.
- Corrosion: Corrosion or damage to the electrical connections in the reductant injection system can lead to high voltage conditions.
- ECM/PCM Malfunction: A fault in the engine control module (ECM) or powertrain control module (PCM) can also cause the P2058 code to be set.
Symptoms of P2058 GMC
- Check Engine Light: The most common symptom associated with the P2058 code is the illumination of the check engine light on the vehicle's dashboard.
- Reduced Fuel Efficiency: A malfunctioning reductant injection valve can lead to increased fuel consumption due to inefficient emissions control.
- Limp Mode: In severe cases, the vehicle may go into a reduced power or limp mode to prevent engine damage.
- Rough Idle: The engine may exhibit rough idling or hesitation during acceleration if the reductant injection system is not functioning properly.
How to Fix P2058 GMC
- Diagnose the Issue: Use a diagnostic scanner to retrieve the DTC and pinpoint the exact cause of the problem.
- Inspect Wiring and Connections: Check the wiring harness, connectors, and electrical connections in the reductant injection valve circuit for any signs of damage or corrosion.
- Test the Reductant Injection Valve: Test the functionality of the reductant injection valve on Bank 2 Unit 2 to determine if it is operating correctly.
- Replace Faulty Components: If the reductant injection valve or any wiring components are found to be faulty, replace them with new parts.
- Clear DTCs and Test Drive: Clear the DTC from the vehicle's ECM/PCM memory, then test drive the vehicle to ensure that the issue has been resolved.
Cost to Fix P2058 GMC
The typical cost to repair a reductant injection valve circuit high code like P2058 on a GMC vehicle can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary depending on the location, vehicle make and model, and engine type. It is recommended to check with local auto repair shops for a more accurate estimate based on your specific circumstances. Keep in mind that rates at dealerships or in metropolitan areas may be higher, while independent shops often offer more competitive prices.
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