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I've been reading the different threads on this code. I followed the replies to clean out the hoses and replaced the check valve. Still getting the code. What else can be done to get rid of this code. As always Thanks for any help and replies-DBH-Vette
It's a 98.
The pump and solenoid are common to both banks, so if you're not getting P1416 (same code, bank 2), you've already done the usual suspects. I'm assuming you replaced the driver-side check-valve, since that's the easy one to get to.
The test that throws the code depends on specific changes in the feedback from the front O2 sensor on that side, so if it's not reacting the way the computer expects, you'll get that code. That said, if it wasn't working properly, I'd expect other more specific O2-sensor-related codes. But I suppose it's possible that a borderline-good O2 sensor doesn't react fast enough to pass the air-injection system test.