Got code P0411: secondary air injection system incorrect flow. What does this mean, and what is fix ?

Do you mean 'P0411'?

What the P0411 code means. P0411 indicates that the ECU has detected the flow from the secondary air injection system to be out-of-specification. This causes the Check Engine Light to be set and displayed on the dashboard.

P0411 OBD-II Trouble Code: Secondary Air Injection System ...

https://www.google.com/search?q=1994+mazda+b2300+obd+code+411

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P0411 Secondary Air Injection System Incorrect Flow Detected

www.obd-codes.com/p0411

Detailed information on troubleshooting and repairing a P0411 DTC code which has to do with the secondary air ... OBD-II Trouble Code Technical Description.

VW Emissions Code P0411. How to fix it, Quick and Easy ...

? 2:42
https://www.youtube.com/watch?v=x2ul9mbEFZM
Oct 1, 2012 - Uploaded by Keelan Hawkins
VW Emissions Code P0411. .... VW 1.8T Secondary Air Injection Pump Replacement for Fault Code P0411 - Duration: 8:48. by Deutsche Auto ...

The first fault code do you mean p1296 if so that is a cooling system malfunction you will need to check the temperature sensor.

The fault code p0411 is a Secondary Air Injection System Incorrect Flow Detected

And the p0304 fault code is a misfire detected on cylinder 4 possibly a coil pack maybe a plug

That code means. Secondary Air Injection System Incorrect Flow.

Error Code: P0411
Description:
Secondary Air Injection (AIR) System - Incorrect Flow Detected
Indication:
Malfunction Indicator Lamp (MIL) ON.
Reasons:
Secondary air injection (AIR) pump.
Secondary air injection (AIR) valve.
Secondary air injection (AIR) hose(s).

You have a code to go by & you know codes are
used to diagnose the systems with the fault

It won't go away by it's self & running fine to you
is no guarantee that it will for long or not cause damage

Get it repaired

You can use the internet to research codes & their causes

P0411 = Secondary Air Injection System (B2) - Incorrect Flow
You should check the Secondary Air Injection System: Air Injection Pump, Air Injection Solenoid Valve, Air Hoses & Connections.

P2440 refers to the Secondary Air Injection system. It means that the switching valve is stuck open. We already replaced the secondary air flow pump, now it's telling us that's its the secondary air flow sensor and the valve is stuck open. the code is coming up P2440

System Too Lean (Bank 1)

Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.
Note: This DTC is very similar to P0174, and in fact your vehicle may show both codes at the same time.

P0411 Secondary Air Injection System Incorrect Flow Detected, check the...Combination valve
...Secondary Air Injection pump motor
...Secondary Air Injection solenoid valve
I would take it to a mechanic

P0411 Secondary Air Injection System Incorrect Flow Detected

CHEVY IMPALA P0411