P2058 code meaning
Reductant Injection Valve Circuit High (Bank 2 Unit 2)
Powertrain system Generic code P20xx codes Check engine light
What P2058 means
P2058 indicates that the second DEF injector on Bank 2 sees battery voltage on its switched line. Like the other Bank 2, unit 2 codes it is reserved for twin-bank engines with two dosing points per bank, and no manufacturer documents it publicly. The Bank 1 counterpart P2055 appears in GM's 2025 diesel table as a power short of metering valve 2 (Type A after 30 of 60 samples), while Ford's 2023 summary uses that number for a coil resistance more than 2 ohm too high, a reminder that meanings can shift between makers. CARB's comprehensive-component rules require such circuit checks. Moisture in the plug, a short to a neighbouring supply wire or a failed output stage are the usual suspects; dosing at that point stops.
P2058 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2058
- MIL on
- No dosing at the Bank 2 second valve
Common causes of P2058
- Most likelyMoisture in the injector plug
- PossibleShort to a neighbouring supply wire
- Less likelyFailed output stage in the control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Reductant injection valve
What each part of P2058 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 0 | Area: fuel and air metering and auxiliary emission controls. |
| 58 | The exact fault in that area. |
What to do next
- Note P2058 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2058
What does P2058 mean?
P2058 means "Reductant Injection Valve Circuit High (Bank 2 Unit 2)". P2058 indicates that the second DEF injector on Bank 2 sees battery voltage on its switched line. It is a generic code, so it means the same on every make.
Is it safe to drive with P2058?
Drive gently and only to a workshop. With P2058 the car can go into limp mode (reduced power) to protect itself.
Will P2058 fail an emissions test?
Yes, it can. P2058 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2058 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P2058 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.