Fault Code Lookup › Powertrain codes › P0411
P0411 Powertrain · generic OBD-II
Secondary Air Injection System Incorrect Flow Detected
P0411 is a standard code covering engine, transmission, fuel and emissions. It names the system that logged the fault, not the part that failed. Below: which cars owners reported it on, what happened, and recalls on those cars, from 7 complaints filed with NHTSA. Updated November 9, 2026.
- 7owner reports
- 5car models
- 0mention a crash
- 0mention a fire
- 2012–2015model years
Which cars get code P0411?
Every model whose owners mentioned P0411 in a complaint, most reports first. Each year opens that car's full problem report. Popular models collect more reports because more of them are on the road.
Where does P0411 show up?
By brand
- Chevrolet6
- GMC1
Component the owner filed it under
Is there a recall for P0411?
As of November 9, 2026, no NHTSA recall on the cars reporting P0411 names this code or its most-reported component. Recalls can be issued at any time: check your VIN at nhtsa.gov/recalls.
What happened when owners saw P0411?
7 of the 7 reports, spread across the models above, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.
CODES P0411 & P2440 DETECTED AFTER DIAGNOSTICS, PUMP SUPPLIES CATALYTIC CONVERTER FOR PURPOSE OF REDUCING HARMFUL EMISSIONS. BOTH CONVERTERS WERE REPLACED UNDER WARRANTY THIS YEAR. WHY IS A.I.R. NOT COVERED IF IT IS RELATED TO THE CONVERTERS? ENGINE LIGHT ON .
The exhaust manifold cracked and failed. The failed part was not retained by the Chevrolet dealer repair shop. A safety issue arose as exhaust gases entered the passenger compartment via the vehicle's air circulation system. The failure of the exhaust manifold was confirmed by the dealer and replaced at considerable cost (i.e., $2200). No other parties inspected the failed part. There was a check engine light illuminated on the dashboard. The dealer retrieved a P0411 diagnostic trouble code and believed that it was related to the exhaust manifold leak. The exhaust manifold leak first appeared on November 1, 2023.
1ST - 8/11/2018 - 79,653 MILES - CHECK ENGINE LIGHT CAME ON, CODE P0411 SECONDARY AIR INJECTION SYSTEM INCORRECT FLOW DETECTED. DEALERSHIP STATED THE SOLENOID MALFUNCTION CHECK ENGINE CAME BACK ON, CODE P0411, CHEVROLET STATED THE SECONDARY AIR INJECTION SYSTEM IS FUNCTIONING AS DESIGNED AND RESET THE CODE. CHEVY'S STATED THE FAULTY SIR INJECTION SOLENOIDS BANK 1 AND 2 WAS THE CAUSE OF THE CHECK ENGINE LIGHT CODE P0411. ADVISED ME THAT THE BATTERY TERMINAL MAY BE THE ISSUE AND RECOMMENDED CHANGING IT. RECOMMEND A NEW ALTERNATOR. CHEVY WAS UNABLE TO VERIFY THE CODE P0411 BUT MADE A RECOMMENDATION FOR THE ISSUE. CHECK ENGINE LIGHT CAME BACK ON AGAIN, NO OTHER ISSUES WITH THE VEHICLE AT THAT…
I purchased the vehicle in 2021 . It was running fine at first but recently . been having alot of issues with the vehicle. When parking the vehicle and you put it in park it moves forward . also been having alot of tire blow outs one after another for the past 8 months . also sometimes it drives proper and at times it starts swerving . the ride gets bumpy. I already replaced the arm controls also aligned the car . i believe there mechanically defaulted. Also having issues with the exhaust . fuel sensor also was replaced . Codes P0411 keep popping up. Literally I have put more money then I paid for the car. financially has drained me. When called the manufacturer about recalls they said those…
Clogged manifold and engine head. Blockage buildup in manifold and Pcv valve causing exhaust problems. Oil sludge block air in head and manifold causing CEL to come on. And these vehicles drink engine oil like water. Gives code P0411
…THE DEALER PERFORMED A DIAGNOSTIC TEST AND A P0411 CODE WAS FOUND. THIS TIME, THE AIR CHECK VALVE WAS REPLACED. THE CONTACT STATED THAT THE HEATER WAS INOPERABLE. THE CONTACT CHECKED THE COOLANT AND FOUND NO COOLANT IN THE VEHICLE. THE CONTACT STATED THAT THE VEHICLE HAD BEEN AT THE DEALER FOR THE PAST COUPLE OF WEEKS FOR DIAGNOSTIC TESTING AND REPAIRS. THE MANUFACTURER WAS MADE AWARE OF THE FAILURES. THE FAILURE MILEAGE WAS 69,592.
2015 Chevy Equinox DTC Error code P0411.SAI ports should be cleaned or replaced. Front sway bars malfunctioned and needs replaced.Please see if this is covered under warranty vehicle is only 8 years old only had it for 3 years.
P0411: questions drivers ask
What does code P0411 mean?
P0411 is a generic OBD-II powertrain code. Its standard definition is "Secondary Air Injection System Incorrect Flow Detected". The code tells you which system set the fault, not which part failed; the owner reports on this page show what it meant in practice for 5 car models.
Which cars get code P0411 most often?
In NHTSA owner complaints, P0411 is mentioned most for the Chevrolet Cruze (2), Chevrolet Equinox (2), Chevrolet Impala (1), across 5 models and model years 2012 to 2015. Popular models collect more reports because more of them are on the road.
Is there a recall for code P0411?
As of November 2026, no NHTSA recall on the cars reporting P0411 names this code or its most-reported component. Recalls can be issued at any time, so check your VIN at nhtsa.gov/recalls.
What should I do if my car shows P0411?
Write down when the code appeared and what the car did (warning lights, loss of power, noises, speed, weather). Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer or independent workshop to read the stored freeze-frame data before anyone clears the code, and keep the repair order. If the car loses power in traffic, stop driving it. CarHooq does not diagnose: these are owner reports and official recall notices, not repair advice.
How this page was made
CarHooq read the text of every owner complaint filed with NHTSA for 19 US and European brands (model years 2012 onwards) and picked out the diagnostic trouble codes owners wrote down. This page lists every mention of P0411. The definition is the generic SAE J2012 wording; a carmaker may use the code slightly differently. Nothing here is a diagnosis. More answers: the fault code FAQ. Data: NHTSA Office of Defects Investigation (public domain), retrieved November 9, 2026. How CarHooq reports are made.
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