Emissions code
P0410: Secondary air system fault
How much to fix P0410? Typically $260–$1,100.
Wide range: this job varies a lot. Itemize your quote for a better answer.
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $150 | $700 |
| Labor: 1 to 2.5 hours × $110 to $150 an hour | $110 | $375 |
| Fees: shop supplies, disposal, diagnostics | $0 | $25 |
| Total, rounded | $260 | $1,100 |
The hourly rate is the BLS Occupational Employment and Wage Statistics, May 2025 average pay for this trade in the US, $27.13 an hour, times 4 to 5.5 to cover what a shop bills (overhead, tools, insurance, profit). Parts are a band from budget aftermarket to the manufacturer part. Full method.
Not a repair shop, estimates only. Typical range, estimate. Not a quote. Your car, parts and shop change the number.
This is the range for the most common fix, secondary air injection (smog) pump replacement. Which repair your car needs depends on a proper diagnosis.
Some engines blow fresh air into the exhaust for the first minute after a cold start, which helps burn leftover fuel before the converter warms up. The computer found a general fault in that secondary air system but could not pin it to one specific part, so it set this broad code.
- Safe to drive?
- Usually yes, for now
- Most common cause
- Failed air pump
Does not change driving. The light stays on until fixed.
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What you may notice
- Check-engine light on
- Loud whining from the air pump on cold start
- No pump sound at all on cold start
Common causes, most likely first
- Failed air pump
- Stuck valve
- Clogged hose
- Blown fuse or relay
Check this first
Check the air pump fuse and relay first, and listen at a cold start to hear whether the pump whirs. A blown fuse or a failed relay is a small repair compared with a new pump.
Other repairs that sometimes fix P0410
| Repair | Typical range, US |
|---|---|
| Diagnostic scan (check engine light) | $55 to $250 |
Before you pay
- Ask the shop what test showed this part is the cause, not just that the code appeared.
- Ask for parts and labor listed separately, and for the hours.
- Ask for a written OK before any extra work. Many states require written authorization before repairs.
Got a quote already? Check it against the range. Want to see if your car has a recall tied to this problem? Check recalls by VIN.
Need to read a code yourself? OBD-II scanners on eBay (affiliate link, disclosure).
P0410 questions
When does it run?
Only for the first minute or so after a cold start, then the system shuts down. That is why the problem may seem to come and go, and why checking it requires a cold engine.
Why is it costly?
Pumps and valves can be pricey, and some are hard to reach. A careful diagnosis helps so you do not replace the pump when a valve or a relay is the real fault.
Can I skip it?
Not if you need to pass emissions. The light stays on, and most inspection programs fail the car for it. The system does not affect how the car drives, but it is a required emissions part.
How much does it cost to fix P0410?
The most common fix, secondary air injection (smog) pump replacement, has a typical range of $260 to $1,100 across the US. It is an estimate built from parts prices and local labor wages, not a quote. Your car and shop change it.
Typical range in 10 metro areas
Only the labor rate changes between cities. Same parts, same hours.
| Area | Typical range, estimate |
|---|---|
| Boston area, Massachusetts | $270 to $1,175 |
| New York City area | $270 to $1,150 |
| Los Angeles area, California | $270 to $1,150 |
| Chicago area, Illinois | $260 to $1,125 |
| Houston area, Texas | $250 to $1,100 |
| Dallas-Fort Worth area, Texas | $250 to $1,100 |
| Phoenix area, Arizona | $260 to $1,100 |
| Atlanta area, Georgia | $260 to $1,125 |
| Miami area, Florida | $250 to $1,100 |
| Seattle area, Washington | $270 to $1,150 |
Related codes
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Code meaning written in our own words. Some codes mean different things on different makes, so check your scan tool or manual. Not a repair shop, estimates only.