will a thrown code prevent the drive cycle from completing for SMOG?
Thread Starter
Heel & Toe
Joined: Jul 2019
Posts: 16
Likes: 0
will a thrown code prevent the drive cycle from completing for SMOG?
I have a P0410 code (Generic Secondary Air Injection System) that is NOT throwing a check engine light, but it shows up when I hook up my scanner to the OBDII. I had recently replaced the battery due to the car sitting and am trying to run through the drive cycle, so that I can smog the car. The SMOG tech said that only a code that throws a "check engine" light would keep it from passing, but that the drive cycle does need to be completed. I feel like I have properly cycled the car according to several tutorials found on the internet, but the 02 and AIR systems still aren't showing they're ready. My main question is will this code prevent those cycles from completing? If so, what do I do about it?
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Only a "C" Currently Occurring DTC will set a CEL. IF you clear any DTCs or disconnect the battery or have a weak battery, the emissions status ready DTCs will have to go through the drive cycle. The only thing that can flunk you is a Check Engine Light or the emissions ready flags not be set to ready.
If you don't have a scanner that can tell you the status of the emissions ready flags, you can stop by AUTOZONE or Advance and they can tell you if your emission ready flags are all set to ready.
If you don't have a scanner that can tell you the status of the emissions ready flags, you can stop by AUTOZONE or Advance and they can tell you if your emission ready flags are all set to ready.
Thread Starter
Heel & Toe
Joined: Jul 2019
Posts: 16
Likes: 0
Only a "C" Currently Occurring DTC will set a CEL. IF you clear any DTCs or disconnect the battery or have a weak battery, the emissions status ready DTCs will have to go through the drive cycle. The only thing that can flunk you is a Check Engine Light or the emissions ready flags not be set to ready.
If you don't have a scanner that can tell you the status of the emissions ready flags, you can stop by AUTOZONE or Advance and they can tell you if your emission ready flags are all set to ready.
If you don't have a scanner that can tell you the status of the emissions ready flags, you can stop by AUTOZONE or Advance and they can tell you if your emission ready flags are all set to ready.
Let me clarify, the code was not showing up in the onboard diagnostic system. I found the code by hooking up my scanner to the OBDII port. And yes...there are three flags flashing, letting me know the cycle has not been completed for those systems (Air, 02, and EVAP). But I drove it through the cycle several times. That's why I'm wondering if this code is preventing the cycle from being completed. I don't want to clear it, because then I will lose all the progress I have made toward completing the drive cycle....which is a pain in the butt to complete.Again, there is no check engine light on from this code. I don't even know what the code means or hw to remedy it.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,620
Likes: 4,066
From: Cape Coral, Florida
Let me clarify, the code was not showing up in the onboard diagnostic system. I found the code by hooking up my scanner to the OBDII port. And yes...there are three flags flashing, letting me know the cycle has not been completed for those systems (Air, 02, and EVAP). But I drove it through the cycle several times. That's why I'm wondering if this code is preventing the cycle from being completed. I don't want to clear it, because then I will lose all the progress I have made toward completing the drive cycle....which is a pain in the butt to complete.Again, there is no check engine light on from this code. I don't even know what the code means or hw to remedy it.
If the DTC shows "pending" it will prevent the monitor from being completed !!...you must fix the P0410 !!
Burning Brakes
Joined: Feb 2013
Posts: 904
Likes: 296
From: Sacramento, California
I would just fix the problem. That code means the air injection system isn't injecting enough or any air into the exhaust manifolds at start up. It's most likely a failed pump, bad wiring, failed check valves, bad relay or even a blown fuse. It's also possible your 02's are weak needing replacement. The code pops up when the PCM doesn't detect an increase in oxygen content when the air injection system is active. The fact that your code has not set a CEL probably means it's a random problem and not happening every time during a cold start up or the conditions needed to turn on the CEL haven't been set yet.
Steve
Steve
Last edited by killian96ss; Jul 30, 2019 at 03:29 PM. Reason: Added information
Race Director
Joined: Apr 2007
Posts: 11,152
Likes: 890
From: South Western Ontario
I can't say for that code but the emissions system not working right can cause it to vary from never completing to taking much longer to complete. On another vehicle it took about 150 miles to pass the tests with the code and about 15 to pass them once the issue causing the code was fixed.
Thread Starter
Heel & Toe
Joined: Jul 2019
Posts: 16
Likes: 0
I just read in another thread that guy was having the same code pop up (P0141). Apparently he solved it by the very commonly failed vacuum line that runs behind the intake in a loom to under the battery tray and into the fender well which helps control where air flows from you Heater/AC vents. I'm sure I have that same cracked/leaky vacuum line because I cant control the airflow inside the car right now. Could this be the case? Seems weird that that little vacuum line would have anything to do with the operation of the air injection pump
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
If that vacuum line fails it causes P0410 & P0411 to happen because the A.I.R. Pump vacuum .
On the drivers inner fender well, just outboard of the alternator is a fat 1" hose. There is a plastic connector that is inserted there. You can pop that hose apart and on COLD START, that hose (the part of it that comes from the front of the car) should blow a lot of cool fresh air.
The vacuum line goes to a vacuum operated valve that OPENS when the PCM energizes a solenoid and lets the vacuum command it open it. If there is no vacuum, the valve will never open and there wont be any air flow out of that 1" hose.
On the drivers inner fender well, just outboard of the alternator is a fat 1" hose. There is a plastic connector that is inserted there. You can pop that hose apart and on COLD START, that hose (the part of it that comes from the front of the car) should blow a lot of cool fresh air.
The vacuum line goes to a vacuum operated valve that OPENS when the PCM energizes a solenoid and lets the vacuum command it open it. If there is no vacuum, the valve will never open and there wont be any air flow out of that 1" hose.