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P2258 is a diagnostic trouble code (DTC) for "Secondary Air Injection System Control A Circuit High". 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.
The P2258 trouble code is a generic powertrain code related to fuel and air metering (air injection circuit). This code appears when the engine control module (ECM) detects higher voltage levels than are acceptable in the A circuit.
The DTC Code P2558 is also related to:
When a P2558 code appears, the engine control module (ECM) has located an issue with the secondary air injection system’s control circuit. The secondary air injection system assists with reducing a vehicle’s emissions by pumping air into the exhaust stream when an engine is cold, which helps speed up the process of warming the catalytic converter. This code most often appears in cold weather.
A vehicle’s ECM grounds both the air combination valve vacuum control solenoid circuit as well as the air pump’s relay control circuit. If a voltage reading of more than 10% of the allowed amount is read by the ECM, a P2558 code will be stored.
A number of problems or faults could cause a P2258 code, including:
Symptoms of the P2258 code include: * Warning or Check Engine Light is illuminated * Loud noises from the secondary air injection system * Vehicle stalling on startup * Vehicle stalling at idle * Hesitation when the vehicle accelerates
A mechanic may use one or more methods to diagnose a P2258 code, including:
One of the most common mistakes in diagnosing any DTC related to the secondary air injection is not checking and diagnosing a potentially faulty one-way check valve. A misdiagnosis could result in repeat replacements related to the secondary air injection system and continuing pump failures.
Because a P2258 code stored in your ECM could result in your vehicle stalling or hesitating, causing dangerous driving conditions, YourMechanic considers this a potentially serious issue. Take your vehicle into your local dealer service center of repair shop for diagnosis and repair immediately.
As with many codes related to the secondary air injection system, a damaged or faulty one-way check valve may be the culprit. YourMechanic recommends checking and testing these valves before making any further repairs, as a damaged one-way check valve potentially can damage other parts of the air injection system.
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.