Skip the auto shop - Our mechanics make house calls

Q: Vehicle failed compliance check.

asked by on

I had the air-ride suspension system removed due to an inflation problem. Since then, my Check Engine light has been on. When I went for my vehicle compliance check, it failed due to code P0410, a Secondary Air Injection System Malfunction, as well as a second code P0014.

Hello you have two concerns going on here. Lets start wit the P0410 for the secondary air injection. Start by checking the fuses. You should hear the pump come on within the first few minutes of start up. If the fuse for the air pump has blown the pump has failed and will need replacement. If the pump works the output should be check, strong air flow on the output side. The oxygen sensors should be check, with the air pump running the oxygen sensors should drop really low like 20mv. If the sensors don’t drop that low, create a large vacuum leak like from the brake booster to see if the voltage drops that low. If it doesn’t the oxygen sensor should be replaced. If the voltage drops below 20mv the secondary air passage could be plugged in the cylinder heads and will need to cleared out. You may need the aid of a mechanic to perform some testing to monitor pinpoint your problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I have a p0410 code yet my air pump does operate however the flow doesn't seem to be very strong?

There is probably a filter in the pump and yes the filter could block flow. However, before you consider a plugged filter, inspect the check valves; they will commonly get plugged up or stuck. The pump flow is minimal and...

Q: I have a 2005 trailblazer

Your vehicle can use up to 15% ethanol with no ill effects and such use (of E-15 for example) does NOT require regular use of any particular fuel system "cleaner". Most gasoline vended these days already contains a sufficient additive...

Q: Noise & vibration from the passenger tail light or trunk area.

Hi there. Check the taillight or the trunk to see if its loose. A vibration will occur on the taillight or trunk when they are loose. This happens easily when there is an amp in the vehicle or when the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...