What Does P2058 Mean?
The PCM detects abnormally high voltage or resistance in the reductant injection valve circuit for Bank 2, Unit 2. This indicates excessive resistance in the circuit, typically from poor connections or high-resistance faults on the second bank.
Common Causes
35%
Corroded or loose electrical connector at Bank 2 injection valve
30%
High resistance in Bank 2 wiring harness from corrosion or damage
20%
Faulty Bank 2 reductant injection valve with high coil resistance
10%
Poor ground connection at Bank 2 valve or module
5%
Failed DEF control module Bank 2 output circuit
Diagnostic Steps
1
Step 1: Clean and inspect all connectors in Bank 2 reductant injection circuit
2
Step 2: Measure Bank 2 injection valve resistance and verify within specification
3
Step 3: Perform voltage drop testing on power and ground circuits under load
4
Step 4: Verify all ground connections are clean, tight, and corrosion-free
5
Step 5: Replace injection valve or repair circuits based on diagnostic findings
Estimated Repair Cost
$200 - $1,200
Parts + labor, varies by vehicle and location
The PCM detects abnormally high voltage or resistance in the reductant injection valve circuit for Bank 2, Unit 2. This indicates excessive resistance in the circuit, typically from poor connections or high-resistance faults on the second bank.
The most common cause of P2058 (Reductant Injection Valve Circuit High Bank 2 Unit 2) is: Corroded or loose electrical connector at Bank 2 injection valve
Typical repair costs for P2058 range from $200 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive temporarily but emissions system will not function properly. May result in engine power limitations and potential no-start condition after warning period expires.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2058 to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control System (SCR/DEF)
Difficulty
Type
Generic (SAE)
Recommended Tools
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