Quote:
Originally Posted by X5chemist
What's the actual code? Mine had a secondary pump code. I knew it was failing because I could hear the bearings making noise. Two replacement pumps set the same pump code. A third replacement pump worked. The two lower priced air pumps didn't work. A Hella pump from RockAuto worked. RockAuto let me return the two other brands. Jumping the pump with 12V has full battery amps. Replacement pumps probably have higher motor start resistance. The higher resistance probably sets the codes. Try a Hella air pump. It worked on mine
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Thanks! I will look into this.
I am getting two codes: P1419 (split air #2 circuit malfunction) and p0491 (secondary air injection system bank #1 malfunction- insufficient flow)
The pump I started with in the car appears to be good, but it is possible it is drawing too much current (?) It definitely runs and blows air. It is loud, but it was always loud (sounds like a jet engine taking off). I measured the current with a bench power supply, it was something like 26 amps at 13VDC. I didn't check the current draw of the replacement pump.
I will say that I stopped hearing that noise this summer, but I thought the car didn't run the secondary air pump when starting at higher ambient temperatures and so this was normal (?)
The new pump was from RockAuto, but I think it will be a hassle to return/exchange. It was a cheaper make:
https://www.rockauto.com/en/moreinfo.php?pk=9722548
08-29-2025, 07:24 AM
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