P2058 OBD-II Trouble Code: Reductant Injector Circuit High Bank 2 Unit 2

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P2058 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2058 code

P2058 is a diagnostic trouble code (DTC) for "Reductant Injector Circuit High Bank 2 Unit 2". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P2058 DIAGNOSTIC Get a fair and transparent estimate upfront

Diagnostic Trouble Code (DTC): P2058

P2058 code definition

Reductant Injector Circuit High Bank 2 Unit 2

What the P2058 code means

P2058 is an OBD-II generic code for the engine control module (ECM) detecting the reductant injection air pump control circuit for bank 2 unit 2 having an open or short in the circuit.

What causes the P2058 code?

  • The ECM controls the reductant injection air pump. The ECM can detect open circuits or high resistance in the control circuit and will turn on the Check Engine Light if it detects a fault.

  • A short to power in the control circuit from the ECM to the reductant injector air pump.

  • The high voltage battery supply is shorted to the control circuit return wire.

What are the symptoms of the P2058 code?

  • The Check Engine Light will be illuminated and the code set in ECM memory as a fault.
  • The exhaust emission may be richer than expected.
  • The vehicle will fail any emission tests due to the illuminated Check Engine Light.

How does a mechanic diagnose the P2058 code?

  • Scans for codes and documents the codes in the ECM; looks at the freeze frame data for failure.

  • Checks the air pump wiring connections for problems with loose or corroded connections.

  • Checks the air pump for the proper resistance or shorts in the pump circuit.

  • Follows the manufacturer pinpoint tests for the diagnosis and replacement of the reductant injector and air pump.

Common mistakes when diagnosing the P2058 code?

  • Clearing ECM memory codes before checking the freeze frame data for the main failure problem, so the failure may be duplicated and repaired.

  • Failing to clear the ECM codes after the codes are fixed so the ECM will enable the system to normal again.

How serious is the P2058 code?

Code P2058 is a code that may not cause any drive complaints but will illuminate the Check Engine Light and cause a vehicle to fail an emission test.

What repairs can fix the P2058 code?

  • Replacing the air pump

  • Repairing the connector pins of shorted harness, and repairing corrosion or loose connections at the reductant injector and air pump

  • Replacing an ECM as directed from manufacturer pinpoint tests.

Additional comments for consideration regarding the P2058 code

Code P2058 is for an open or shorted circuit for the reductant injector air pump. This is a code only used by a couple of different manufacturers, so meanings may be different from your vehicle than this article implies. Follow the pinpoint test for the vehicle you are working on to determine if your vehicle uses the reductant injection system.

Need help with a P2058 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6220.

trouble codes
Check Engine Light
P2058

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P2058 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

4,810

Rating Summary
4,424
187
47
28
124
4,424
187
47
28
124

Joel

19 years of experience
741 reviews
Joel
19 years of experience
Acura RL - Check Engine Light is on - Jacksonville, Florida
very knowledgeable and precise. able to fix electrical issues in my car. Right on time for the appointment.

Christopher

15 years of experience
41 reviews
Christopher
15 years of experience
Honda Accord - Check Engine Light is on - Fairburn, Georgia
Christopher was excellent! He explained everything in detail to make sure I understood. He was professional and provided me with the next course of actions to resolve my care issues. I'm glad he was sent to service my car.

Alexander

18 years of experience
58 reviews
Alexander
18 years of experience
Saab 9-7x - Check Engine Light is on - Kissimmee, Florida
He was very friendly and very helpful . I felt like it was being around a close friend , also gave me so very good advice on my car & future advice about it . Highly recommend mechanic, would use his services again .

Matthew

31 years of experience
639 reviews
Matthew
31 years of experience
Jeep Patriot - Check Engine Light is on - Norfolk, Virginia
Matthew was on time which was a relief, he is very knowledgeable and was easy to understand what was wrong and what was being done. I am recommending to friends and family due to the great experience Matthew gave me. Extremely professional 10/10

More related articles

P2047 OBD-II Trouble Code: Reductant Injector Circuit/Open Bank 1 Unit 1
P2047 P2047 trouble code definition The P2047 code is a general OBD2 trouble code that points to a fault within the reductant injector circuit. What the P2047 code means The P2047 code means a fault is present in the reductant...
B1350 OBD-II Trouble Code: Heated Backlight Relay Short to Ground
B1350 means there is an error with the heated backlight relay, likely due it being defective, a faulty switch, or a blown fuse.
P0694 OBD-II Trouble Code: Fan 2 Control Circuit High
P0694 means that the circuit voltage fell more than 10% away from the manufacturer specifications due to a faulty fan motor or relay.

Related questions

A scanner found the code P02B4, what does it mean?

That is an interesting code since your engine only has 4 cylinders. It is possible that the vehicle has the wrong information stored in the computer and is throwing a code for a V-8 engine. I recommend having your computer...

P0455 Code

The code P0455 is an indication that the fuel system cannot hold vapor pressure when it is put into testing. This means you have a leak somewhere. Since you did not have the issue before you had worked on the...

How many crankshaft position sensors are on a 2011 GMC Terrain?

Usually there will only be one crankshaft position sensor. However, there is also a camshaft position sensor as well. It is more likely that there is multiple cam sensors than crank sensors. It is possible for engines to have anywhere...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com