Check Engine Soon code

[ReBop]

I'm getting the "check engine soon" light on the dash.

Car is 2002 Camaro SS with 37,000 miles.

Can anybody guess what the problem is? It runs perfectly.

I may have missed something in the servicing. At any rate, I'll run it by a parts house and get them to read the code.

Hope it's nothing serious.

[Joe 1320]

Can anybody guess what the problem is? .

The flux capacitor has a centrifugal short.


No idea if the car is running fine...... until you get the code scanned. Then we could make a really good guess. post it here once you run by Autozone and get a free scan.

[ReBop]

P0410

Troubleshooting P0410
Domestic brand

Secondary air injection system fault

Probable causes:

Circuit relay defective or open fuse
Connector and wiring
Air pump defective or hoses blocked

[Injuneer]

I think I answered this for you on CamaroZ28.com.

PCM cycled the AIR pump, and didn't see the air show up in the exhaust as a lean condition = no flow. Check the ckeck valve for being stuck closed, check for a melter hose due to check valve leakage. Maybe a leak in the vacuum activation system if the EGR valve is vacuum operated, or a broken diaphragm in the EGR valve.

No flow can be caused by a faulty pump circuit or faulty relay, but either of those codes will set a code.

[ReBop]

Right. It can be a number of things in the air pump system, from fuses to valves, sensors, hoses and the pump itself.

I'll have to trouble shoot it.

Thanks.

[FTA1995]

that code and what Fred said refers specifically to an electrical fault, remember to keep it easy

[Injuneer]

No....does not refer to an electrical fault, does not refer to a solenoid (no solenoid code), does not refer to a pump circuit (no pump circuit code). It says when the pump is turned on, there is no added air being detected in the exhaust.

[ReBop]

Right. That code is telling you that the system, in general is malfuncioning. It's up to the mechanic to trouble shoot all the individual components.

Dealers makes a killing on generalized sensor fault readings. Car companies designed this stuff to make it as elusive and expensive as possible.

I've heard that secondary air failure does not harm the vehicle. Hope that's true.

[FTA1995]

Troubleshooting P0410
Domestic brand

Secondary air injection system fault

Probable causes:

Circuit relay defective or open fuse
Connector and wiring
Air pump defective or hoses blocked

I'm sorry misread wrong post, so then it picks up a false rich then off the O2's?

[Injuneer]

Read what I posted already. It turns on the AIR pump during normal operation of the engine (well past startup). Since the AIR pump adds air to the exhaust, the O2 sensors should indicate less than 222mV (LEAN), due to the excess air. Not RICH. If the O2 sensor on either side doesn't drop below 222mV, the code sets, because the system is not flowing air into the exhaust.

I'm also puzzled why you feel this is a "general" code. It means air is not flowing. But the fact that you do not have other codes related to the AIR system rules out some of the other possible problems. It isn't dead-on specific, but working this code, with lack of other codes, helps narrow it down.

I'm getting the impression that no one is actually reading what I am posting.

[RAF7789]

The flux capacitor has a centrifugal short.

goood call, doc. then you can kick it up to 88mph.